+// ===========================================================================
+// wxGUIAppTraits implementation
+// ===========================================================================
+
+// private class which we use to pass parameters from BeforeChildWaitLoop() to
+// AfterChildWaitLoop()
+struct ChildWaitLoopData
+{
+ ChildWaitLoopData(wxWindowDisabler *wd_, wxWindow *winActive_)
+ {
+ wd = wd_;
+ winActive = winActive_;
+ }
+
+ wxWindowDisabler *wd;
+ wxWindow *winActive;
+};
+
+void *wxGUIAppTraits::BeforeChildWaitLoop()
+{
+ /*
+ We use a dirty hack here to disable all application windows (which we
+ must do because otherwise the calls to wxYield() could lead to some very
+ unexpected reentrancies in the users code) but to avoid losing
+ focus/activation entirely when the child process terminates which would
+ happen if we simply disabled everything using wxWindowDisabler. Indeed,
+ remember that Windows will never activate a disabled window and when the
+ last childs window is closed and Windows looks for a window to activate
+ all our windows are still disabled. There is no way to enable them in
+ time because we don't know when the childs windows are going to be
+ closed, so the solution we use here is to keep one special tiny frame
+ enabled all the time. Then when the child terminates it will get
+ activated and when we close it below -- after reenabling all the other
+ windows! -- the previously active window becomes activated again and
+ everything is ok.
+ */
+ wxBeginBusyCursor();
+
+ // first disable all existing windows
+ wxWindowDisabler *wd = new wxWindowDisabler;
+
+ // then create an "invisible" frame: it has minimal size, is positioned
+ // (hopefully) outside the screen and doesn't appear on the taskbar
+ wxWindow *winActive = new wxFrame
+ (
+ wxTheApp->GetTopWindow(),
+ wxID_ANY,
+ wxEmptyString,
+ wxPoint(32600, 32600),
+ wxSize(1, 1),
+ wxDEFAULT_FRAME_STYLE | wxFRAME_NO_TASKBAR
+ );
+ winActive->Show();
+
+ return new ChildWaitLoopData(wd, winActive);
+}
+
+void wxGUIAppTraits::AlwaysYield()
+{
+ wxYield();
+}
+
+void wxGUIAppTraits::AfterChildWaitLoop(void *dataOrig)
+{
+ wxEndBusyCursor();
+
+ ChildWaitLoopData * const data = (ChildWaitLoopData *)dataOrig;
+
+ delete data->wd;
+
+ // finally delete the dummy frame and, as wd has been already destroyed and
+ // the other windows reenabled, the activation is going to return to the
+ // window which had had it before
+ data->winActive->Destroy();
+
+ // also delete the temporary data object itself
+ delete data;
+}
+
+bool wxGUIAppTraits::DoMessageFromThreadWait()
+{
+ // we should return false only if the app should exit, i.e. only if
+ // Dispatch() determines that the main event loop should terminate
+ return !wxTheApp || wxTheApp->Dispatch();
+}
+
+wxToolkitInfo& wxGUIAppTraits::GetToolkitInfo()
+{
+ static wxToolkitInfo info;
+ wxToolkitInfo& baseInfo = wxAppTraits::GetToolkitInfo();
+ info.versionMajor = baseInfo.versionMajor;
+ info.versionMinor = baseInfo.versionMinor;
+ info.os = baseInfo.os;
+ info.shortName = _T("msw");
+ info.name = _T("wxMSW");
+#ifdef __WXUNIVERSAL__
+ info.shortName << _T("univ");
+ info.name << _T("/wxUniversal");
projects / wxWidgets.git / blobdiff