#include "wx/filename.h"
#include "wx/dynlib.h"
#include "wx/evtloop.h"
+#include "wx/thread.h"
#include "wx/msw/private.h"
+#include "wx/msw/dc.h"
#include "wx/msw/ole/oleutils.h"
#include "wx/msw/private/timer.h"
// OLE is used for drag-and-drop, clipboard, OLE Automation..., but some
// compilers don't support it (missing headers, libs, ...)
-#if defined(__GNUWIN32_OLD__) || defined(__SYMANTEC__) || defined(__SALFORDC__)
+#if defined(__GNUWIN32_OLD__) || defined(__SYMANTEC__)
#undef wxUSE_OLE
#define wxUSE_OLE 0
RegisterWindowClasses();
- wxWinHandleHash = new wxWinHashTable(wxKEY_INTEGER, 100);
-
#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
wxSetKeyboardHook(true);
#endif
void wxApp::CleanUp()
{
- // all objects pending for deletion must be deleted first, otherwise we
- // would crash when they use wxWinHandleHash (and UnregisterWindowClasses()
- // call wouldn't succeed as long as any windows still exist), so call the
- // base class method first and only then do our clean up
+ // all objects pending for deletion must be deleted first, otherwise
+ // UnregisterWindowClasses() call wouldn't succeed (because windows
+ // using the classes being unregistered still exist), so call the base
+ // class method first and only then do our clean up
wxAppBase::CleanUp();
#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
// unregister the classes now
UnregisterWindowClasses();
- delete wxWinHandleHash;
- wxWinHandleHash = NULL;
-
#ifdef __WXWINCE__
free( wxCanvasClassName );
free( wxCanvasClassNameNR );
// start up again. Doing it this way ensures that the idle handler
// wakes up in the right thread (see also wxWakeUpMainThread() which does
// the same for the main app thread only)
- wxWindow *topWindow = wxTheApp->GetTopWindow();
+ wxWindow * const topWindow = wxTheApp->GetTopWindow();
if ( topWindow )
{
- if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
+ HWND hwndTop = GetHwndOf(topWindow);
+
+ // Do not post WM_NULL if there's already a pending WM_NULL to avoid
+ // overflowing the message queue.
+ //
+ // Notice that due to a limitation of PeekMessage() API (which handles
+ // 0,0 range specially), we have to check the range from 0-1 instead.
+ // This still makes it possible to overflow the queue with WM_NULLs by
+ // interspersing the calles to WakeUpIdle() with windows creation but
+ // it should be rather hard to do it accidentally.
+ MSG msg;
+ if ( !::PeekMessage(&msg, hwndTop, 0, 1, PM_NOREMOVE) ||
+ ::PeekMessage(&msg, hwndTop, 1, 1, PM_NOREMOVE) )
{
- // should never happen
- wxLogLastError(wxT("PostMessage(WM_NULL)"));
+ if ( !::PostMessage(hwndTop, WM_NULL, 0, 0) )
+ {
+ // should never happen
+ wxLogLastError(wxT("PostMessage(WM_NULL)"));
+ }
}
}
}
}
// ----------------------------------------------------------------------------
-// miscellaneous
+// system DLL versions
// ----------------------------------------------------------------------------
+// these functions have trivial inline implementations for CE
+#ifndef __WXWINCE__
+
+#if wxUSE_DYNLIB_CLASS
+
+namespace
+{
+
+// helper function: retrieve the DLL version by using DllGetVersion(), returns
+// 0 if the DLL doesn't export such function
+int CallDllGetVersion(wxDynamicLibrary& dll)
+{
+ // now check if the function is available during run-time
+ wxDYNLIB_FUNCTION( DLLGETVERSIONPROC, DllGetVersion, dll );
+ if ( !pfnDllGetVersion )
+ return 0;
+
+ DLLVERSIONINFO dvi;
+ dvi.cbSize = sizeof(dvi);
+
+ HRESULT hr = (*pfnDllGetVersion)(&dvi);
+ if ( FAILED(hr) )
+ {
+ wxLogApiError(_T("DllGetVersion"), hr);
+
+ return 0;
+ }
+
+ return 100*dvi.dwMajorVersion + dvi.dwMinorVersion;
+}
+
+} // anonymous namespace
+
/* static */
int wxApp::GetComCtl32Version()
{
-#if defined(__WXMICROWIN__) || defined(__WXWINCE__)
- return 0;
-#else
// cache the result
//
// NB: this is MT-ok as in the worst case we'd compute s_verComCtl32 twice,
if ( s_verComCtl32 == -1 )
{
- // initally assume no comctl32.dll at all
- s_verComCtl32 = 0;
-
// we're prepared to handle the errors
wxLogNull noLog;
-#if wxUSE_DYNLIB_CLASS
- // do we have it?
+ // the DLL should really be available
wxDynamicLibrary dllComCtl32(_T("comctl32.dll"), wxDL_VERBATIM);
+ if ( !dllComCtl32.IsLoaded() )
+ {
+ s_verComCtl32 = 0;
+ return 0;
+ }
+
+ // try DllGetVersion() for recent DLLs
+ s_verComCtl32 = CallDllGetVersion(dllComCtl32);
- // if so, then we can check for the version
- if ( dllComCtl32.IsLoaded() )
+ // if DllGetVersion() is unavailable either during compile or
+ // run-time, try to guess the version otherwise
+ if ( !s_verComCtl32 )
{
- // now check if the function is available during run-time
- wxDYNLIB_FUNCTION( DLLGETVERSIONPROC, DllGetVersion, dllComCtl32 );
- if ( pfnDllGetVersion )
+ // InitCommonControlsEx is unique to 4.70 and later
+ void *pfn = dllComCtl32.GetSymbol(_T("InitCommonControlsEx"));
+ if ( !pfn )
{
- DLLVERSIONINFO dvi;
- dvi.cbSize = sizeof(dvi);
-
- HRESULT hr = (*pfnDllGetVersion)(&dvi);
- if ( FAILED(hr) )
- {
- wxLogApiError(_T("DllGetVersion"), hr);
- }
- else
- {
- // this is incompatible with _WIN32_IE values, but
- // compatible with the other values returned by
- // GetComCtl32Version()
- s_verComCtl32 = 100*dvi.dwMajorVersion +
- dvi.dwMinorVersion;
- }
+ // not found, must be 4.00
+ s_verComCtl32 = 400;
}
-
- // if DllGetVersion() is unavailable either during compile or
- // run-time, try to guess the version otherwise
- if ( !s_verComCtl32 )
+ else // 4.70+
{
- // InitCommonControlsEx is unique to 4.70 and later
- void *pfn = dllComCtl32.GetSymbol(_T("InitCommonControlsEx"));
+ // many symbols appeared in comctl32 4.71, could use any of
+ // them except may be DllInstall()
+ pfn = dllComCtl32.GetSymbol(_T("InitializeFlatSB"));
if ( !pfn )
{
- // not found, must be 4.00
- s_verComCtl32 = 400;
+ // not found, must be 4.70
+ s_verComCtl32 = 470;
}
- else // 4.70+
+ else
{
- // many symbols appeared in comctl32 4.71, could use any of
- // them except may be DllInstall()
- pfn = dllComCtl32.GetSymbol(_T("InitializeFlatSB"));
- if ( !pfn )
- {
- // not found, must be 4.70
- s_verComCtl32 = 470;
- }
- else
- {
- // found, must be 4.71 or later
- s_verComCtl32 = 471;
- }
+ // found, must be 4.71 or later
+ s_verComCtl32 = 471;
}
}
}
-#endif
}
return s_verComCtl32;
-#endif // Microwin/!Microwin
}
+/* static */
+int wxApp::GetShell32Version()
+{
+ static int s_verShell32 = -1;
+ if ( s_verShell32 == -1 )
+ {
+ // we're prepared to handle the errors
+ wxLogNull noLog;
+
+ wxDynamicLibrary dllShell32(_T("shell32.dll"), wxDL_VERBATIM);
+ if ( dllShell32.IsLoaded() )
+ {
+ s_verShell32 = CallDllGetVersion(dllShell32);
+
+ if ( !s_verShell32 )
+ {
+ // there doesn't seem to be any way to distinguish between 4.00
+ // and 4.70 (starting from 4.71 we have DllGetVersion()) so
+ // just assume it is 4.0
+ s_verShell32 = 400;
+ }
+ }
+ else // failed load the DLL?
+ {
+ s_verShell32 = 0;
+ }
+ }
+
+ return s_verShell32;
+}
+
+#else // !wxUSE_DYNLIB_CLASS
+
+/* static */
+int wxApp::GetComCtl32Version()
+{
+ return 0;
+}
+
+/* static */
+int wxApp::GetShell32Version()
+{
+ return 0;
+}
+
+#endif // wxUSE_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS
+
+#endif // !__WXWINCE__
+
+// ----------------------------------------------------------------------------
// Yield to incoming messages
+// ----------------------------------------------------------------------------
bool wxApp::Yield(bool onlyIfNeeded)
{
projects / wxWidgets.git / blobdiff