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Work around wrong client size computation for not yet shown maximized windows.

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The client size of maximized windows which hadn't been shown yet isn't
computed correctly by wxMSW because WM_NCCALCSIZE returns too small values for
some reason. Attempts to fix this were unsuccessful so just ensure that the
window is re-laid out using the right size from WM_SIZE it receives when it is
shown instead of using the wrong pending size.

Closes #11762.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@64115 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2010-04-23 19:34:36 +00:00
parent eddac3cb0f
commit e259ce57e6
2 changed files with 22 additions and 5 deletions
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15
src/msw/toplevel.cpp
View File

@@ -662,6 +662,16 @@ bool wxTopLevelWindowMSW::Show(bool show)
nShowCmd = SW_HIDE;
}
// 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;
DoShowWindow(nShowCmd);
#if defined(__WXWINCE__) && (_WIN32_WCE >= 400 && !defined(__POCKETPC__) && !defined(__SMARTPHONE__))
@@ -671,11 +681,6 @@ bool wxTopLevelWindowMSW::Show(bool show)
frame->GetMenuBar()->AddAdornments(GetWindowStyleFlag());
#endif
// 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)
m_pendingSize = wxDefaultSize;
return true;
}

12
src/msw/window.cpp
View File

@@ -1819,6 +1819,18 @@ void wxWindowMSW::DoGetClientSize(int *x, int *y) const
if ( m_pendingSize != wxDefaultSize )
{
// we need to calculate the client size corresponding to pending size
//
// FIXME: Unfortunately this doesn't work correctly for the maximized
// top level windows, the returned values are too small (e.g.
// under Windows 7 on a 1600*1200 screen with task bar on the
// right the pending size for a maximized window is 1538*1200
// and WM_NCCALCSIZE returns 1528*1172 even though the correct
// client size of such window is 1538*1182). No idea how to fix
// it though, setting WS_MAXIMIZE in GWL_STYLE before calling
// WM_NCCALCSIZE doesn't help and AdjustWindowRectEx() doesn't
// work in this direction neither. So we just have to live with
// the slightly wrong results and relayout the window when it
// gets finally shown in its maximized state (see #11762).
RECT rect;
rect.left = m_pendingPosition.x;
rect.top = m_pendingPosition.y;