+ if ( m_oldWndProc )
+ {
+ if ( !wxCheckWindowWndProc((WXHWND)hwnd, m_oldWndProc) )
+ {
+ ::SetWindowLong(hwnd, GWL_WNDPROC, (LONG) m_oldWndProc);
+ }
+
+ m_oldWndProc = NULL;
+ }
+ }
+}
+
+bool wxCheckWindowWndProc(WXHWND hWnd, WXFARPROC wndProc)
+{
+ // Unicows note: the code below works, but only because WNDCLASS contains
+ // original window handler rather that the unicows fake one. This may not
+ // be on purpose, though; if it stops working with future versions of
+ // unicows.dll, we can override unicows hooks by setting
+ // Unicows_{Set,Get}WindowLong and Unicows_RegisterClass to our own
+ // versions that keep track of fake<->real wnd proc mapping.
+ WNDCLASS cls;
+ if ( !::GetClassInfo(wxGetInstance(), wxGetWindowClass(hWnd), &cls) )
+ {
+ wxLogLastError(_T("GetClassInfo"));
+
+ return FALSE;
+ }
+
+ return wndProc == (WXFARPROC)cls.lpfnWndProc;
+}
+
+// ----------------------------------------------------------------------------
+// Style handling
+// ----------------------------------------------------------------------------
+
+void wxWindowMSW::SetWindowStyleFlag(long flags)
+{
+ long flagsOld = GetWindowStyleFlag();
+ if ( flags == flagsOld )
+ return;
+
+ // update the internal variable
+ wxWindowBase::SetWindowStyleFlag(flags);
+
+ // now update the Windows style as well if needed - and if the window had
+ // been already created
+ if ( !GetHwnd() )
+ return;
+
+ WXDWORD exstyle, exstyleOld;
+ long style = MSWGetStyle(flags, &exstyle),
+ styleOld = MSWGetStyle(flagsOld, &exstyleOld);
+
+ if ( style != styleOld )
+ {
+ // some flags (e.g. WS_VISIBLE or WS_DISABLED) should not be changed by
+ // this function so instead of simply setting the style to the new
+ // value we clear the bits which were set in styleOld but are set in
+ // the new one and set the ones which were not set before
+ long styleReal = ::GetWindowLong(GetHwnd(), GWL_STYLE);
+ styleReal &= ~styleOld;
+ styleReal |= style;
+
+ ::SetWindowLong(GetHwnd(), GWL_STYLE, styleReal);
+ }
+
+ // and the extended style
+ if ( exstyle != exstyleOld )
+ {
+ long exstyleReal = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE);
+ exstyleReal &= ~exstyleOld;
+ exstyleReal |= exstyle;
+
+ ::SetWindowLong(GetHwnd(), GWL_EXSTYLE, exstyleReal);
+
+ // we must call SetWindowPos() to flash the cached extended style and
+ // also to make the change to wxSTAY_ON_TOP style take effect: just
+ // setting the style simply doesn't work
+ if ( !::SetWindowPos(GetHwnd(),
+ exstyleReal & WS_EX_TOPMOST ? HWND_TOPMOST
+ : HWND_NOTOPMOST,
+ 0, 0, 0, 0,
+ SWP_NOMOVE | SWP_NOSIZE) )
projects / wxWidgets.git / blobdiff