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allow using wxTaskBarIcon under Win95 by loading Shell_NotifyIcon() dynamically (more importantly, allow applications using to start up under Win95 as they didn't without it)

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@48889 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2007-09-21 18:28:04 +00:00
parent de414223ab
commit 6f9822faf4
1 changed files with 37 additions and 3 deletions
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40
src/msw/taskbar.cpp
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@@ -30,6 +30,7 @@
#include <string.h>
#include "wx/taskbar.h"
#include "wx/dynlib.h"
// initialized on demand
UINT gs_msgTaskbar = 0;
@@ -42,6 +43,39 @@ IMPLEMENT_DYNAMIC_CLASS(wxTaskBarIcon, wxEvtHandler)
// implementation
// ============================================================================
// wrapper around Shell_NotifyIcon(): this function is not present in Win95
// shell32.dll so load it dynamically to allow programs using wxTaskBarIcon to
// start under this OS
static BOOL wxShellNotifyIcon(DWORD dwMessage, NOTIFYICONDATA *pData)
{
#if wxUSE_DYNLIB_CLASS
typedef BOOL (WINAPI *Shell_NotifyIcon_t)(DWORD, NOTIFYICONDATA *);
static Shell_NotifyIcon_t s_pfnShell_NotifyIcon = NULL;
static bool s_initialized = false;
if ( !s_initialized )
{
s_initialized = true;
wxLogNull noLog;
wxDynamicLibrary dllShell("shell32.dll");
if ( dllShell.IsLoaded() )
{
s_pfnShell_NotifyIcon =
(Shell_NotifyIcon_t)dllShell.GetSymbolAorW("Shell_NotifyIcon");
}
// NB: it's ok to destroy dllShell here, we link to shell32.dll
// implicitly so it won't be unloaded
}
return s_pfnShell_NotifyIcon ? (*s_pfnShell_NotifyIcon)(dwMessage, pData)
: FALSE;
#else // !wxUSE_DYNLIB_CLASS
return Shell_NotifyIcon(dwMessage, pData);
#endif // wxUSE_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS
}
// ----------------------------------------------------------------------------
// wxTaskBarIconWindow: helper window
// ----------------------------------------------------------------------------
@@ -147,8 +181,8 @@ bool wxTaskBarIcon::SetIcon(const wxIcon& icon, const wxString& tooltip)
wxStrncpy(notifyData.szTip, tooltip.c_str(), WXSIZEOF(notifyData.szTip));
}
bool ok = Shell_NotifyIcon(m_iconAdded ? NIM_MODIFY
: NIM_ADD, &notifyData) != 0;
bool ok = wxShellNotifyIcon(m_iconAdded ? NIM_MODIFY
: NIM_ADD, &notifyData) != 0;
if ( !m_iconAdded && ok )
m_iconAdded = true;
@@ -165,7 +199,7 @@ bool wxTaskBarIcon::RemoveIcon()
NotifyIconData notifyData(GetHwndOf(m_win));
return Shell_NotifyIcon(NIM_DELETE, &notifyData) != 0;
return wxShellNotifyIcon(NIM_DELETE, &notifyData) != 0;
}
#if wxUSE_MENUS