Amebis/wxWidgets
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
463deb03c90cf636cc2df7aa67d4d8afbddc5c64
wxWidgets/src/msw/toplevel.cpp
Vadim Zeitlin 4ad9cde380 Use the new wxDisplay(wxWindow*) ctor to simplify the code 
Make the code simpler and, in a couple of places where the fall back to
the primary display in case wxDisplay::GetFromWindow() returned -1 was
missing, also more correct.
2018-11-01 00:06:34 +01:00

1356 lines
43 KiB
C++
Raw Blame History

///////////////////////////////////////////////////////////////////////////////
// Name: src/msw/toplevel.cpp
// Purpose: implements wxTopLevelWindow for MSW
// Author: Vadim Zeitlin
// Modified by:
// Created: 24.09.01
// Copyright: (c) 2001 SciTech Software, Inc. (www.scitechsoft.com)
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#include "wx/toplevel.h"
#ifndef WX_PRECOMP
#include "wx/app.h"
#include "wx/dialog.h"
#include "wx/string.h"
#include "wx/log.h"
#include "wx/intl.h"
#include "wx/frame.h"
#include "wx/menu.h"
#include "wx/containr.h" // wxSetFocusToChild()
#include "wx/module.h"
#endif //WX_PRECOMP
#include "wx/dynlib.h"
#include "wx/scopeguard.h"
#include "wx/tooltip.h"
#include "wx/msw/private.h"
#include "wx/msw/private/winstyle.h"
#include "wx/msw/winundef.h"
#include "wx/msw/missing.h"
#include "wx/display.h"
// NB: wxDlgProc must be defined here and not in dialog.cpp because the latter
// is not included by wxUniv build which does need wxDlgProc
INT_PTR APIENTRY
wxDlgProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam);
// ----------------------------------------------------------------------------
// wxTLWHiddenParentModule: used to manage the hidden parent window (we need a
// module to ensure that the window is always deleted)
// ----------------------------------------------------------------------------
class wxTLWHiddenParentModule : public wxModule
{
public:
// module init/finalize
virtual bool OnInit() wxOVERRIDE;
virtual void OnExit() wxOVERRIDE;
// get the hidden window (creates on demand)
static HWND GetHWND();
private:
// the HWND of the hidden parent
static HWND ms_hwnd;
// the class used to create it
static const wxChar *ms_className;
wxDECLARE_DYNAMIC_CLASS(wxTLWHiddenParentModule);
};
wxIMPLEMENT_DYNAMIC_CLASS(wxTLWHiddenParentModule, wxModule);
// ============================================================================
// wxTopLevelWindowMSW implementation
// ============================================================================
wxBEGIN_EVENT_TABLE(wxTopLevelWindowMSW, wxTopLevelWindowBase)
EVT_ACTIVATE(wxTopLevelWindowMSW::OnActivate)
wxEND_EVENT_TABLE()
// ----------------------------------------------------------------------------
// wxTopLevelWindowMSW creation
// ----------------------------------------------------------------------------
void wxTopLevelWindowMSW::Init()
{
m_showCmd = SW_SHOWNORMAL;
// Data to save/restore when calling ShowFullScreen
m_fsStyle = 0;
m_fsOldWindowStyle = 0;
m_fsIsMaximized = false;
m_fsIsShowing = false;
m_menuSystem = NULL;
}
WXDWORD wxTopLevelWindowMSW::MSWGetStyle(long style, WXDWORD *exflags) const
{
// let the base class deal with the common styles but fix the ones which
// don't make sense for us (we also deal with the borders ourselves)
WXDWORD msflags = wxWindow::MSWGetStyle
(
(style & ~wxBORDER_MASK) | wxBORDER_NONE, exflags
) & ~WS_CHILD & ~WS_VISIBLE;
// first select the kind of window being created
//
// note that if we don't set WS_POPUP, Windows assumes WS_OVERLAPPED and
// creates a window with both caption and border, hence we need to use
// WS_POPUP in a few cases just to avoid having caption/border which we
// don't want
// border and caption styles
if ( ( style & wxRESIZE_BORDER ) && !IsAlwaysMaximized())
msflags |= WS_THICKFRAME;
else if ( exflags && ((style & wxBORDER_DOUBLE) || (style & wxBORDER_RAISED)) )
*exflags |= WS_EX_DLGMODALFRAME;
else if ( !(style & wxBORDER_NONE) )
msflags |= WS_BORDER;
else
msflags |= WS_POPUP;
if ( style & wxCAPTION )
msflags |= WS_CAPTION;
else
msflags |= WS_POPUP;
// next translate the individual flags
// WS_EX_CONTEXTHELP is incompatible with WS_MINIMIZEBOX and WS_MAXIMIZEBOX
// and is ignored if we specify both of them, but chances are that if we
// use wxWS_EX_CONTEXTHELP, we really do want to have the context help
// button while wxMINIMIZE/wxMAXIMIZE are included by default, so the help
// takes precedence
if ( !(GetExtraStyle() & wxWS_EX_CONTEXTHELP) )
{
if ( style & wxMINIMIZE_BOX )
msflags |= WS_MINIMIZEBOX;
if ( style & wxMAXIMIZE_BOX )
msflags |= WS_MAXIMIZEBOX;
}
// notice that if wxCLOSE_BOX is specified we need to use WS_SYSMENU too as
// otherwise the close box doesn't appear
if ( style & (wxSYSTEM_MENU | wxCLOSE_BOX) )
msflags |= WS_SYSMENU;
// NB: under CE these 2 styles are not supported currently, we should
// call Minimize()/Maximize() "manually" if we want to support them
if ( style & wxMINIMIZE )
msflags |= WS_MINIMIZE;
if ( style & wxMAXIMIZE )
msflags |= WS_MAXIMIZE;
// Keep this here because it saves recoding this function in wxTinyFrame
if ( style & wxTINY_CAPTION )
msflags |= WS_CAPTION;
if ( exflags )
{
if ( !(GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) )
{
if ( style & wxFRAME_TOOL_WINDOW )
{
// create the palette-like window
*exflags |= WS_EX_TOOLWINDOW;
// tool windows shouldn't appear on the taskbar (as documented)
style |= wxFRAME_NO_TASKBAR;
}
// We have to solve 2 different problems here:
//
// 1. frames with wxFRAME_NO_TASKBAR flag shouldn't appear in the
// taskbar even if they don't have a parent
//
// 2. frames without this style should appear in the taskbar even
// if they're owned (Windows only puts non owned windows into
// the taskbar normally)
//
// The second one is solved here by using WS_EX_APPWINDOW flag, the
// first one is dealt with in our MSWGetParent() method
// implementation
if ( !(style & wxFRAME_NO_TASKBAR) && GetParent() )
{
// need to force the frame to appear in the taskbar
*exflags |= WS_EX_APPWINDOW;
}
//else: nothing to do [here]
}
if ( GetExtraStyle() & wxWS_EX_CONTEXTHELP )
*exflags |= WS_EX_CONTEXTHELP;
if ( style & wxSTAY_ON_TOP )
*exflags |= WS_EX_TOPMOST;
}
return msflags;
}
WXHWND wxTopLevelWindowMSW::MSWGetParent() const
{
// for the frames without wxFRAME_FLOAT_ON_PARENT style we should use NULL
// parent HWND or it would be always on top of its parent which is not what
// we usually want (in fact, we only want it for frames with the
// wxFRAME_FLOAT_ON_PARENT flag)
HWND hwndParent = NULL;
if ( HasFlag(wxFRAME_FLOAT_ON_PARENT) )
{
const wxWindow *parent = GetParent();
if ( !parent )
{
// this flag doesn't make sense then and will be ignored
wxFAIL_MSG( wxT("wxFRAME_FLOAT_ON_PARENT but no parent?") );
}
else
{
hwndParent = GetHwndOf(parent);
}
}
//else: don't float on parent, must not be owned
// now deal with the 2nd taskbar-related problem (see comments above in
// MSWGetStyle())
if ( HasFlag(wxFRAME_NO_TASKBAR) && !hwndParent )
{
// use hidden parent
hwndParent = wxTLWHiddenParentModule::GetHWND();
}
return (WXHWND)hwndParent;
}
WXLRESULT wxTopLevelWindowMSW::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
{
WXLRESULT rc = 0;
bool processed = false;
switch ( message )
{
case WM_SYSCOMMAND:
{
// From MSDN:
//
// ... the four low-order bits of the wParam parameter are
// used internally by the system. To obtain the correct
// result when testing the value of wParam, an application
// must combine the value 0xFFF0 with the wParam value by
// using the bitwise AND operator.
unsigned id = wParam & 0xfff0;
// Preserve the focus when minimizing/restoring the window:
// surprisingly, DefWindowProc() doesn't do it automatically
// and so we need to it ourselves. Moreover, our code in
// OnActivate() doesn't work in this case as we receive the
// deactivation event too late when the window is being
// minimized and the focus is already NULL by then. Similarly,
// we receive the activation event too early and restoring
// focus in it fails because the window is still minimized. So
// we need to do it here.
if ( id == SC_MINIMIZE )
{
// For minimization, it's simple enough: just save the
// focus as usual. The important thing is that we're not
// minimized yet, so this works correctly.
DoSaveLastFocus();
}
else if ( id == SC_RESTORE )
{
// For restoring, it's trickier as DefWindowProc() sets
// focus to the window itself. So run it first and restore
// our saved focus only afterwards.
processed = true;
rc = wxTopLevelWindowBase::MSWWindowProc(message,
wParam, lParam);
DoRestoreLastFocus();
}
#ifndef __WXUNIVERSAL__
// We need to generate events for the custom items added to the
// system menu if it had been created (and presumably modified).
// As SC_SIZE is the first of the system-defined commands, we
// only do this for the custom commands before it and leave
// SC_SIZE and everything after it to DefWindowProc().
if ( m_menuSystem && id < SC_SIZE )
{
if ( m_menuSystem->MSWCommand(0 /* unused anyhow */, id) )
processed = true;
}
#endif // #ifndef __WXUNIVERSAL__
}
break;
}
if ( !processed )
rc = wxTopLevelWindowBase::MSWWindowProc(message, wParam, lParam);
return rc;
}
bool wxTopLevelWindowMSW::CreateDialog(const void *dlgTemplate,
const wxString& title,
const wxPoint& pos,
const wxSize& size)
{
// static cast is valid as we're only ever called for dialogs
wxWindow * const
parent = static_cast<wxDialog *>(this)->GetParentForModalDialog();
m_hWnd = (WXHWND)::CreateDialogIndirect
(
wxGetInstance(),
(DLGTEMPLATE*)dlgTemplate,
parent ? GetHwndOf(parent) : NULL,
(DLGPROC)wxDlgProc
);
if ( !m_hWnd )
{
wxFAIL_MSG(wxT("Failed to create dialog. Incorrect DLGTEMPLATE?"));
wxLogSysError(wxT("Can't create dialog using memory template"));
return false;
}
// For some reason, the system menu is activated when we use the
// WS_EX_CONTEXTHELP style, so let's set a reasonable icon
if ( HasExtraStyle(wxWS_EX_CONTEXTHELP) )
{
wxFrame *winTop = wxDynamicCast(wxTheApp->GetTopWindow(), wxFrame);
if ( winTop )
{
wxIcon icon = winTop->GetIcon();
if ( icon.IsOk() )
{
::SendMessage(GetHwnd(), WM_SETICON,
(WPARAM)TRUE,
(LPARAM)GetHiconOf(icon));
}
}
}
if ( !title.empty() )
{
::SetWindowText(GetHwnd(), title.t_str());
}
SubclassWin(m_hWnd);
// move the dialog to its initial position without forcing repainting
int x, y, w, h;
(void)MSWGetCreateWindowCoords(pos, size, x, y, w, h);
if ( x == (int)CW_USEDEFAULT )
{
// Let the system position the window, just set its size.
::SetWindowPos(GetHwnd(), 0,
0, 0, w, h,
SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE);
}
else // Move the window to the desired location and set its size too.
{
if ( !::MoveWindow(GetHwnd(), x, y, w, h, FALSE) )
{
wxLogLastError(wxT("MoveWindow"));
}
}
return true;
}
bool wxTopLevelWindowMSW::CreateFrame(const wxString& title,
const wxPoint& pos,
const wxSize& size)
{
WXDWORD exflags;
WXDWORD flags = MSWGetCreateWindowFlags(&exflags);
const wxSize sz = IsAlwaysMaximized() ? wxDefaultSize : size;
if ( wxApp::MSWGetDefaultLayout(m_parent) == wxLayout_RightToLeft )
exflags |= WS_EX_LAYOUTRTL;
return MSWCreate(GetMSWClassName(GetWindowStyle()), title.t_str(), pos, sz, flags, exflags);
}
bool wxTopLevelWindowMSW::Create(wxWindow *parent,
wxWindowID id,
const wxString& title,
const wxPoint& pos,
const wxSize& size,
long style,
const wxString& name)
{
wxSize sizeReal = size;
if ( !sizeReal.IsFullySpecified() )
{
sizeReal.SetDefaults(GetDefaultSize());
}
// notice that we should append this window to wxTopLevelWindows list
// before calling CreateBase() as it behaves differently for TLW and
// non-TLW windows
wxTopLevelWindows.Append(this);
if ( !CreateBase(parent, id, pos, sizeReal, style, name) )
return false;
if ( parent )
parent->AddChild(this);
if ( GetExtraStyle() & wxTOPLEVEL_EX_DIALOG )
{
// we have different dialog templates to allows creation of dialogs
// with & without captions under MSWindows, resizable or not (but a
// resizable dialog always has caption - otherwise it would look too
// strange)
// we need 3 additional WORDs for dialog menu, class and title (as we
// don't use DS_SETFONT we don't need the fourth WORD for the font)
static const int dlgsize = sizeof(DLGTEMPLATE) + (sizeof(WORD) * 3);
DLGTEMPLATE *dlgTemplate = (DLGTEMPLATE *)malloc(dlgsize);
wxON_BLOCK_EXIT1(free, dlgTemplate);
memset(dlgTemplate, 0, dlgsize);
// these values are arbitrary, they won't be used normally anyhow
const LONG baseUnits = ::GetDialogBaseUnits();
dlgTemplate->x = 34;
dlgTemplate->y = 22;
dlgTemplate->cx = ::MulDiv(sizeReal.x, 4, LOWORD(baseUnits));
dlgTemplate->cy = ::MulDiv(sizeReal.y, 8, HIWORD(baseUnits));
// reuse the code in MSWGetStyle() but correct the results slightly for
// the dialog
//
// NB: we need a temporary variable as we can't pass pointer to
// dwExtendedStyle directly, it's not aligned correctly for 64 bit
// architectures
WXDWORD dwExtendedStyle;
dlgTemplate->style = MSWGetStyle(style, &dwExtendedStyle);
dlgTemplate->dwExtendedStyle = dwExtendedStyle;
// all dialogs are popups
dlgTemplate->style |= WS_POPUP;
if ( wxApp::MSWGetDefaultLayout(m_parent) == wxLayout_RightToLeft )
{
dlgTemplate->dwExtendedStyle |= WS_EX_LAYOUTRTL;
}
// force 3D-look if necessary, it looks impossibly ugly otherwise
if ( style & (wxRESIZE_BORDER | wxCAPTION) )
dlgTemplate->style |= DS_MODALFRAME;
if ( !CreateDialog(dlgTemplate, title, pos, sizeReal) )
return false;
}
else // !dialog
{
if ( !CreateFrame(title, pos, sizeReal) )
return false;
}
if ( !(GetWindowStyleFlag() & wxCLOSE_BOX) )
{
EnableCloseButton(false);
}
// for standard dialogs the dialog manager generates WM_CHANGEUISTATE
// itself but for custom windows we have to do it ourselves in order to
// make the keyboard indicators (such as underlines for accelerators and
// focus rectangles) work under Win2k+
MSWUpdateUIState(UIS_INITIALIZE);
return true;
}
wxTopLevelWindowMSW::~wxTopLevelWindowMSW()
{
delete m_menuSystem;
SendDestroyEvent();
// after destroying an owned window, Windows activates the next top level
// window in Z order but it may be different from our owner (to reproduce
// this simply Alt-TAB to another application and back before closing the
// owned frame) whereas we always want to yield activation to our parent
if ( HasFlag(wxFRAME_FLOAT_ON_PARENT) )
{
wxWindow *parent = GetParent();
if ( parent )
{
::BringWindowToTop(GetHwndOf(parent));
}
}
}
// ----------------------------------------------------------------------------
// wxTopLevelWindowMSW showing
// ----------------------------------------------------------------------------
void wxTopLevelWindowMSW::DoShowWindow(int nShowCmd)
{
::ShowWindow(GetHwnd(), nShowCmd);
#if wxUSE_TOOLTIPS
// Don't leave a tooltip hanging around if TLW is hidden now.
wxToolTip::UpdateVisibility();
#endif // wxUSE_TOOLTIPS
}
void wxTopLevelWindowMSW::ShowWithoutActivating()
{
if ( !wxWindowBase::Show(true) )
return;
// We can't show the window in a maximized state without activating it, so
// the sequence of hiding the window, calling Maximize() and this function
// will end up with the window not being maximized -- but this is arguably
// better than activating it and is compatible with the historical
// behaviour of this function.
DoShowWindow(m_showCmd == SW_MINIMIZE ? SW_SHOWMINNOACTIVE : SW_SHOWNA);
}
bool wxTopLevelWindowMSW::Show(bool show)
{
// don't use wxWindow version as we want to call DoShowWindow() ourselves
if ( !wxWindowBase::Show(show) )
return false;
int nShowCmd;
if ( show )
{
// If we need to minimize or maximize the window, do it now.
if ( m_showCmd == SW_MAXIMIZE || m_showCmd == SW_MINIMIZE )
{
nShowCmd = m_showCmd;
}
else if ( ::IsIconic(GetHwnd()) )
{
// We were restored while we were hidden, so now we need to show
// the window in its normal state.
//
// As below, don't activate some kinds of windows.
if ( HasFlag(wxFRAME_TOOL_WINDOW) || !IsEnabled() )
nShowCmd = SW_SHOWNOACTIVATE;
else
nShowCmd = SW_RESTORE;
}
else // just show
{
// we shouldn't use SW_SHOW which also activates the window for
// tool frames (as they shouldn't steal focus from the main window)
// nor for the currently disabled windows as they would be enabled
// as a side effect
if ( HasFlag(wxFRAME_TOOL_WINDOW) || !IsEnabled() )
nShowCmd = SW_SHOWNA;
else
nShowCmd = SW_SHOW;
}
}
else // hide
{
// When hiding the window, remember if it was maximized or iconized in
// order to return the correct value from Is{Maximized,Iconized}().
if ( ::IsZoomed(GetHwnd()) )
m_showCmd = SW_MAXIMIZE;
else if ( ::IsIconic(GetHwnd()) )
m_showCmd = SW_MINIMIZE;
else
m_showCmd = SW_SHOW;
nShowCmd = SW_HIDE;
}
#if wxUSE_DEFERRED_SIZING
// we only set pending size if we're maximized before being shown, now that
// we're shown we don't need it any more (it is reset in size event handler
// for child windows but we have to do it ourselves for this parent window)
//
// make sure to reset it before actually showing the window as this will
// generate WM_SIZE events and we want to use the correct client size from
// them, not the size returned by WM_NCCALCSIZE in DoGetClientSize() which
// turns out to be wrong for maximized windows (see #11762)
m_pendingSize = wxDefaultSize;
#endif // wxUSE_DEFERRED_SIZING
DoShowWindow(nShowCmd);
return true;
}
void wxTopLevelWindowMSW::Raise()
{
::SetForegroundWindow(GetHwnd());
}
// ----------------------------------------------------------------------------
// wxTopLevelWindowMSW maximize/minimize
// ----------------------------------------------------------------------------
void wxTopLevelWindowMSW::Maximize(bool maximize)
{
// Update m_showCmd to ensure that the window is maximized when it's shown
// later even if it's currently hidden.
m_showCmd = maximize ? SW_MAXIMIZE : SW_RESTORE;
if ( IsShown() )
{
// just maximize it directly
DoShowWindow(m_showCmd);
}
else // hidden
{
// we can't maximize the hidden frame because it shows it as well,
// so don't do anything other than updating m_showCmd for now
#if wxUSE_DEFERRED_SIZING
// after calling Maximize() the client code expects to get the frame
// "real" size and doesn't want to know that, because of implementation
// details, the frame isn't really maximized yet but will be only once
// it's shown, so return our size as it will be then in this case
if ( maximize )
{
// we must only change pending size here, and not call SetSize()
// because otherwise Windows would think that this (full screen)
// size is the natural size for the frame and so would use it when
// the user clicks on "restore" title bar button instead of the
// correct initial frame size
//
// NB: unfortunately we don't know which display we're on yet so we
// have to use the default one
m_pendingSize = wxGetClientDisplayRect().GetSize();
}
//else: can't do anything in this case, we don't have the old size
#endif // wxUSE_DEFERRED_SIZING
}
}
bool wxTopLevelWindowMSW::IsMaximized() const
{
if ( IsAlwaysMaximized() )
return true;
// If the window is shown, just ask Windows if it's maximized. But hidden
// windows are not really maximized, even after Maximize() is called on
// them, so for them we check if we're scheduled to maximize the window
// when it's shown instead.
return IsShown() ? ::IsZoomed(GetHwnd()) != 0 : m_showCmd == SW_MAXIMIZE;
}
void wxTopLevelWindowMSW::Iconize(bool iconize)
{
if ( iconize == MSWIsIconized() )
{
// Do nothing, in particular don't restore non-iconized windows when
// Iconize(false) is called as this would wrongly un-maximize them.
return;
}
// Note that we can't change m_showCmd yet as wxFrame WM_SIZE handler uses
// its value to determine whether the frame had been iconized before or not
// and this handler will be called from inside DoShowWindow() below.
const UINT showCmd = iconize ? SW_MINIMIZE : SW_RESTORE;
// We can't actually iconize the window if it's currently hidden, as this
// would also show it unexpectedly.
if ( IsShown() )
{
DoShowWindow(showCmd);
}
// Update the internal flag in any case, so that IsIconized() returns the
// correct value, for example. And if the window is currently hidden, this
// also ensures that the next call to Show() will show it in an iconized
// state instead of showing it normally.
m_showCmd = showCmd;
}
bool wxTopLevelWindowMSW::IsIconized() const
{
if ( !IsShown() )
{
// Hidden windows are never actually iconized at MSW level, but can be
// in wx, so use m_showCmd to determine our status.
return m_showCmd == SW_MINIMIZE;
}
// don't use m_showCmd, it may be briefly out of sync with the real state
// as it's only modified when we receive a WM_SIZE and we could be called
// from an event handler from one of the messages we receive before it,
// such as WM_MOVE
return MSWIsIconized();
}
bool wxTopLevelWindowMSW::MSWIsIconized() const
{
return ::IsIconic(GetHwnd()) != 0;
}
void wxTopLevelWindowMSW::Restore()
{
// Forget any previous minimized/maximized status.
m_showCmd = SW_SHOW;
// And actually restore the window to its normal state. Note that here,
// unlike in Maximize() and Iconize(), we do it even if the window is
// currently hidden, i.e. Restore() is supposed to show it in this case.
DoShowWindow(SW_RESTORE);
}
void wxTopLevelWindowMSW::SetLayoutDirection(wxLayoutDirection dir)
{
if ( dir == wxLayout_Default )
dir = wxApp::MSWGetDefaultLayout(m_parent);
if ( dir != wxLayout_Default )
wxTopLevelWindowBase::SetLayoutDirection(dir);
}
// ----------------------------------------------------------------------------
// wxTopLevelWindowMSW geometry
// ----------------------------------------------------------------------------
void wxTopLevelWindowMSW::DoGetPosition(int *x, int *y) const
{
if ( IsIconized() )
{
WINDOWPLACEMENT wp;
wp.length = sizeof(WINDOWPLACEMENT);
if ( ::GetWindowPlacement(GetHwnd(), &wp) )
{
RECT& rc = wp.rcNormalPosition;
// the position returned by GetWindowPlacement() is in workspace
// coordinates except for windows with WS_EX_TOOLWINDOW style
if ( !HasFlag(wxFRAME_TOOL_WINDOW) )
{
// we must use the correct display for the translation as the
// task bar might be shown on one display but not the other one
wxDisplay dpy(this);
const wxPoint ptOfs = dpy.GetClientArea().GetPosition() -
dpy.GetGeometry().GetPosition();
rc.left += ptOfs.x;
rc.top += ptOfs.y;
}
if ( x )
*x = rc.left;
if ( y )
*y = rc.top;
return;
}
wxLogLastError(wxT("GetWindowPlacement"));
}
//else: normal case
wxTopLevelWindowBase::DoGetPosition(x, y);
}
void wxTopLevelWindowMSW::DoGetSize(int *width, int *height) const
{
if ( IsIconized() )
{
WINDOWPLACEMENT wp;
wp.length = sizeof(WINDOWPLACEMENT);
if ( ::GetWindowPlacement(GetHwnd(), &wp) )
{
const RECT& rc = wp.rcNormalPosition;
if ( width )
*width = rc.right - rc.left;
if ( height )
*height = rc.bottom - rc.top;
return;
}
wxLogLastError(wxT("GetWindowPlacement"));
}
//else: normal case
wxTopLevelWindowBase::DoGetSize(width, height);
}
void
wxTopLevelWindowMSW::MSWGetCreateWindowCoords(const wxPoint& pos,
const wxSize& size,
int& x, int& y,
int& w, int& h) const
{
// let the system position the window if no explicit position was specified
if ( pos.x == wxDefaultCoord )
{
// if x is set to CW_USEDEFAULT, y parameter is ignored anyhow so we
// can just as well set it to CW_USEDEFAULT as well
x =
y = CW_USEDEFAULT;
}
else
{
// OTOH, if x is not set to CW_USEDEFAULT, y shouldn't be set to it
// neither because it is not handled as a special value by Windows then
// and so we have to choose some default value for it, even if a
// completely arbitrary one
static const int DEFAULT_Y = 200;
x = pos.x;
y = pos.y == wxDefaultCoord ? DEFAULT_Y : pos.y;
}
if ( size.x == wxDefaultCoord || size.y == wxDefaultCoord )
{
// We don't use CW_USEDEFAULT here for several reasons:
//
// 1. It results in huge frames on modern screens (1000*800 is not
// uncommon on my 1280*1024 screen) which is way too big for a half
// empty frame of most of wxWidgets samples for example)
//
// 2. It is buggy for frames with wxFRAME_TOOL_WINDOW style for which
// the default is for whatever reason 8*8 which breaks client <->
// window size calculations (it would be nice if it didn't, but it
// does and the simplest way to fix it seemed to change the broken
// default size anyhow)
//
// 3. There is just no advantage in doing it: with x and y it is
// possible that [future versions of] Windows position the new top
// level window in some smart way which we can't do, but we can
// guess a reasonably good size for a new window just as well
// ourselves
//
wxSize sizeReal = size;
sizeReal.SetDefaults(GetDefaultSize());
w = sizeReal.x;
h = sizeReal.y;
}
else
{
w = size.x;
h = size.y;
}
}
// ----------------------------------------------------------------------------
// wxTopLevelWindowMSW fullscreen
// ----------------------------------------------------------------------------
bool wxTopLevelWindowMSW::ShowFullScreen(bool show, long style)
{
if ( show == IsFullScreen() )
{
// nothing to do
return true;
}
m_fsIsShowing = show;
if ( show )
{
m_fsStyle = style;
// zap the frame borders
// save the 'normal' window style
wxMSWWinStyleUpdater updateStyle(GetHwnd());
m_fsOldWindowStyle = updateStyle.Get();
// save the old position, width & height, maximize state
m_fsOldSize = GetRect();
m_fsIsMaximized = IsMaximized();
// decide which window style flags to turn off
LONG offFlags = 0;
if (style & wxFULLSCREEN_NOBORDER)
{
offFlags |= WS_BORDER;
offFlags |= WS_THICKFRAME;
}
if (style & wxFULLSCREEN_NOCAPTION)
offFlags |= WS_CAPTION | WS_SYSMENU;
updateStyle.TurnOff(offFlags);
// Full screen windows should logically be popups as they don't have
// decorations (and are definitely not children) and while not using
// this style doesn't seem to make any difference for most windows, it
// breaks wxGLCanvas in some cases, see #15434, so just always use it.
updateStyle.TurnOn(WS_POPUP);
// change our window style to be compatible with full-screen mode
updateStyle.Apply();
// resize to the size of the display containing us, falling back to the
// primary one
const wxRect rect = wxDisplay(this).GetGeometry();
SetSize(rect);
// now flush the window style cache and actually go full-screen
long flags = SWP_FRAMECHANGED;
// showing the frame full screen should also show it if it's still
// hidden
if ( !IsShown() )
{
// don't call wxWindow version to avoid flicker from calling
// ::ShowWindow() -- we're going to show the window at the correct
// location directly below -- but do call the wxWindowBase version
// to sync the internal m_isShown flag
wxWindowBase::Show();
flags |= SWP_SHOWWINDOW;
}
SetWindowPos(GetHwnd(), HWND_TOP,
rect.x, rect.y, rect.width, rect.height,
flags);
// finally send an event allowing the window to relayout itself &c
wxSizeEvent event(rect.GetSize(), GetId());
event.SetEventObject(this);
HandleWindowEvent(event);
}
else // stop showing full screen
{
Maximize(m_fsIsMaximized);
SetWindowLong(GetHwnd(),GWL_STYLE, m_fsOldWindowStyle);
SetWindowPos(GetHwnd(),HWND_TOP,m_fsOldSize.x, m_fsOldSize.y,
m_fsOldSize.width, m_fsOldSize.height, SWP_FRAMECHANGED);
}
return true;
}
// ----------------------------------------------------------------------------
// wxTopLevelWindowMSW misc
// ----------------------------------------------------------------------------
void wxTopLevelWindowMSW::SetTitle( const wxString& title)
{
SetLabel(title);
}
wxString wxTopLevelWindowMSW::GetTitle() const
{
return GetLabel();
}
bool wxTopLevelWindowMSW::DoSelectAndSetIcon(const wxIconBundle& icons,
int smX,
int smY,
int i)
{
const wxSize size(::GetSystemMetrics(smX), ::GetSystemMetrics(smY));
wxIcon icon = icons.GetIcon(size, wxIconBundle::FALLBACK_NEAREST_LARGER);
if ( !icon.IsOk() )
return false;
::SendMessage(GetHwnd(), WM_SETICON, i, (LPARAM)GetHiconOf(icon));
return true;
}
void wxTopLevelWindowMSW::SetIcons(const wxIconBundle& icons)
{
wxTopLevelWindowBase::SetIcons(icons);
if ( icons.IsEmpty() )
{
// FIXME: SetIcons(wxNullIconBundle) should unset existing icons,
// but we currently don't do that
wxASSERT_MSG( m_icons.IsEmpty(), "unsetting icons doesn't work" );
return;
}
DoSelectAndSetIcon(icons, SM_CXSMICON, SM_CYSMICON, ICON_SMALL);
DoSelectAndSetIcon(icons, SM_CXICON, SM_CYICON, ICON_BIG);
}
// static
bool wxTopLevelWindowMSW::MSWEnableCloseButton(WXHWND hwnd, bool enable)
{
// get system (a.k.a. window) menu
HMENU hmenu = GetSystemMenu(hwnd, FALSE /* get it */);
if ( !hmenu )
{
// no system menu at all -- ok if we want to remove the close button
// anyhow, but bad if we want to show it
return !enable;
}
// enabling/disabling the close item from it also automatically
// disables/enables the close title bar button
if ( ::EnableMenuItem(hmenu, SC_CLOSE,
MF_BYCOMMAND |
(enable ? MF_ENABLED : MF_GRAYED)) == -1 )
{
wxLogLastError(wxT("EnableMenuItem(SC_CLOSE)"));
return false;
}
// update appearance immediately
if ( !::DrawMenuBar(hwnd) )
{
wxLogLastError(wxT("DrawMenuBar"));
}
return true;
}
bool wxTopLevelWindowMSW::EnableCloseButton(bool enable)
{
return MSWEnableCloseButton(GetHwnd(), enable);
}
// Window must have wxCAPTION and either wxCLOSE_BOX or wxSYSTEM_MENU for the
// button to be visible. Also check for wxMAXIMIZE_BOX because we don't want
// to enable a button that is excluded from the current style.
bool wxTopLevelWindowMSW::EnableMaximizeButton(bool enable)
{
if ( ( HasFlag(wxCAPTION) &&
( HasFlag(wxCLOSE_BOX) || HasFlag(wxSYSTEM_MENU) ) ) &&
HasFlag(wxMAXIMIZE_BOX) )
{
if ( enable )
{
SetWindowStyleFlag(GetWindowStyleFlag() | wxMAXIMIZE_BOX);
}
else
{
SetWindowStyleFlag(GetWindowStyleFlag() ^ wxMAXIMIZE_BOX);
// Restore the style to our internal store
wxWindowBase::SetWindowStyleFlag(GetWindowStyle() | wxMAXIMIZE_BOX);
}
return true;
}
return false;
}
bool wxTopLevelWindowMSW::EnableMinimizeButton(bool enable)
{
if ( ( HasFlag(wxCAPTION) &&
( HasFlag(wxCLOSE_BOX) || HasFlag(wxSYSTEM_MENU) ) ) &&
HasFlag(wxMINIMIZE_BOX) )
{
if ( enable )
{
SetWindowStyleFlag(GetWindowStyleFlag() | wxMINIMIZE_BOX);
}
else
{
SetWindowStyleFlag(GetWindowStyleFlag() ^ wxMINIMIZE_BOX);
// Restore the style to our internal store
wxWindowBase::SetWindowStyleFlag(GetWindowStyle() | wxMINIMIZE_BOX);
}
return true;
}
return false;
}
void wxTopLevelWindowMSW::RequestUserAttention(int flags)
{
#if defined(FLASHW_STOP)
WinStruct<FLASHWINFO> fwi;
fwi.hwnd = GetHwnd();
fwi.dwFlags = FLASHW_ALL;
if ( flags & wxUSER_ATTENTION_INFO )
{
// just flash a few times
fwi.uCount = 3;
}
else // wxUSER_ATTENTION_ERROR
{
// flash until the user notices it
fwi.dwFlags |= FLASHW_TIMERNOFG;
}
::FlashWindowEx(&fwi);
#else
{
wxUnusedVar(flags);
::FlashWindow(GetHwnd(), TRUE);
}
#endif // defined(FLASHW_STOP)
}
wxMenu *wxTopLevelWindowMSW::MSWGetSystemMenu() const
{
#ifndef __WXUNIVERSAL__
if ( !m_menuSystem )
{
HMENU hmenu = ::GetSystemMenu(GetHwnd(), FALSE);
if ( !hmenu )
{
wxLogLastError(wxT("GetSystemMenu()"));
return NULL;
}
wxTopLevelWindowMSW * const
self = const_cast<wxTopLevelWindowMSW *>(this);
self->m_menuSystem = wxMenu::MSWNewFromHMENU(hmenu);
// We need to somehow associate this menu with this window to ensure
// that we get events from it. A natural idea would be to pretend that
// it's attached to our menu bar but this wouldn't work if we don't
// have any menu bar which is a common case for applications using
// custom items in the system menu (they mostly do it exactly because
// they don't have any other menus).
//
// So reuse the invoking window pointer instead, this is not exactly
// correct but doesn't seem to have any serious drawbacks.
m_menuSystem->SetInvokingWindow(self);
}
#endif // #ifndef __WXUNIVERSAL__
return m_menuSystem;
}
// ----------------------------------------------------------------------------
// Transparency support
// ---------------------------------------------------------------------------
bool wxTopLevelWindowMSW::SetTransparent(wxByte alpha)
{
wxMSWWinExStyleUpdater updateExStyle(GetHwnd());
// if setting alpha to fully opaque then turn off the layered style
if (alpha == 255)
{
updateExStyle.TurnOff(WS_EX_LAYERED).Apply();
Refresh();
return true;
}
// Otherwise, set the layered style if needed and set the alpha value
updateExStyle.TurnOn(WS_EX_LAYERED).Apply();
if ( ::SetLayeredWindowAttributes(GetHwnd(), 0, (BYTE)alpha, LWA_ALPHA) )
return true;
return false;
}
bool wxTopLevelWindowMSW::CanSetTransparent()
{
return true;
}
void wxTopLevelWindowMSW::DoFreeze()
{
// do nothing: freezing toplevel window causes paint and mouse events
// to go through it any TLWs under it, so the best we can do is to freeze
// all children -- and wxWindowBase::Freeze() does that
}
void wxTopLevelWindowMSW::DoThaw()
{
// intentionally empty -- see DoFreeze()
}
// ----------------------------------------------------------------------------
// wxTopLevelWindow event handling
// ----------------------------------------------------------------------------
void wxTopLevelWindowMSW::DoSaveLastFocus()
{
if ( MSWIsIconized() )
return;
// remember the last focused child if it is our child
wxWindow* const winFocus = FindFocus();
m_winLastFocused = IsDescendant(winFocus) ? winFocus : NULL;
}
void wxTopLevelWindowMSW::DoRestoreLastFocus()
{
wxWindow *parent = m_winLastFocused ? m_winLastFocused->GetParent()
: NULL;
if ( !parent )
{
parent = this;
}
wxWindow* winPtr = m_winLastFocused;
wxSetFocusToChild(parent, &winPtr);
m_winLastFocused = winPtr;
}
void wxTopLevelWindowMSW::OnActivate(wxActivateEvent& event)
{
if ( event.GetActive() )
{
// We get WM_ACTIVATE before being restored from iconized state, so we
// can be still iconized here. In this case, avoid restoring the focus
// as it doesn't work anyhow and we will do when we're really restored.
if ( MSWIsIconized() )
{
event.Skip();
return;
}
// restore focus to the child which was last focused unless one of our
// children already has it (the frame having focus on itself does not
// count, if only because this would be always the case for an MDI
// child frame as the MDI parent sets focus to it before it's
// activated)
wxLogTrace(wxT("focus"), wxT("wxTLW %p activated."), m_hWnd);
wxWindow* const winFocus = FindFocus();
if ( winFocus == this || !IsDescendant(winFocus) )
DoRestoreLastFocus();
}
else // deactivating
{
DoSaveLastFocus();
wxLogTrace(wxT("focus"),
wxT("wxTLW %p deactivated, last focused: %p."),
m_hWnd,
m_winLastFocused ? GetHwndOf(m_winLastFocused) : NULL);
event.Skip();
}
}
// the DialogProc for all wxWidgets dialogs
INT_PTR APIENTRY
wxDlgProc(HWND WXUNUSED(hDlg),
UINT message,
WPARAM WXUNUSED(wParam),
LPARAM WXUNUSED(lParam))
{
switch ( message )
{
case WM_INITDIALOG:
{
// for WM_INITDIALOG, returning TRUE tells system to set focus to
// the first control in the dialog box, but as we set the focus
// ourselves, we return FALSE for it as well
return FALSE;
}
}
// for almost all messages, returning FALSE means that we didn't process
// the message
return FALSE;
}
// ============================================================================
// wxTLWHiddenParentModule implementation
// ============================================================================
HWND wxTLWHiddenParentModule::ms_hwnd = NULL;
const wxChar *wxTLWHiddenParentModule::ms_className = NULL;
bool wxTLWHiddenParentModule::OnInit()
{
ms_hwnd = NULL;
ms_className = NULL;
return true;
}
void wxTLWHiddenParentModule::OnExit()
{
if ( ms_hwnd )
{
if ( !::DestroyWindow(ms_hwnd) )
{
wxLogLastError(wxT("DestroyWindow(hidden TLW parent)"));
}
ms_hwnd = NULL;
}
if ( ms_className )
{
if ( !::UnregisterClass(ms_className, wxGetInstance()) )
{
wxLogLastError(wxT("UnregisterClass(\"wxTLWHiddenParent\")"));
}
ms_className = NULL;
}
}
/* static */
HWND wxTLWHiddenParentModule::GetHWND()
{
if ( !ms_hwnd )
{
if ( !ms_className )
{
static const wxChar *HIDDEN_PARENT_CLASS = wxT("wxTLWHiddenParent");
WNDCLASS wndclass;
wxZeroMemory(wndclass);
wndclass.lpfnWndProc = DefWindowProc;
wndclass.hInstance = wxGetInstance();
wndclass.lpszClassName = HIDDEN_PARENT_CLASS;
if ( !::RegisterClass(&wndclass) )
{
wxLogLastError(wxT("RegisterClass(\"wxTLWHiddenParent\")"));
}
else
{
ms_className = HIDDEN_PARENT_CLASS;
}
}
ms_hwnd = ::CreateWindow(ms_className, wxEmptyString, 0, 0, 0, 0, 0, NULL,
(HMENU)NULL, wxGetInstance(), NULL);
if ( !ms_hwnd )
{
wxLogLastError(wxT("CreateWindow(hidden TLW parent)"));
}
}
return ms_hwnd;
}
Reference in New Issue View Git Blame Copy Permalink