internal static ThreadWindows DisableTaskWindows()
{
ThreadWindows threadWindows = new ThreadWindows();
threadWindows.Enable(false);
return(threadWindows);
}
internal static void EnableTaskWindows(ThreadWindows threadWindows)
{
threadWindows.Enable(true);
threadWindows.Dispose();
threadWindows = null;
}
// Disables windows in preparation of going modal. If parameter is true, we disable all
// windows, if false, only windows forms windows (i.e., windows controlled by this MsoComponent).
// See also IMsoComponent.OnEnterState.
internal void DisableWindowsForModalLoop(bool onlyWinForms, ApplicationContext context) {
Debug.WriteLineIf(CompModSwitches.MSOComponentManager.TraceInfo, "ComponentManager : Entering modal state");
ThreadWindows old = threadWindows;
threadWindows = new ThreadWindows(onlyWinForms);
threadWindows.Enable(false);
threadWindows.previousThreadWindows = old;
ModalApplicationContext modalContext = context as ModalApplicationContext;
if (modalContext != null) {
modalContext.DisableThreadWindows(true, onlyWinForms);
}
}
public static DialogResult ShowDialog(Form form, bool disposeForm)
{
DialogResult result = DialogResult.OK;
#if !NDOC && !DESIGN
if (form == null)
{
throw new ArgumentNullException("form");
}
IntPtr lastWnd = Win32Window.GetActiveWindow();
// it seems that Form.Close() method processes Window Queue itself that is why it is
// only way to be noticed the a dialog form was closed
// If we're not supposed to dispose the form, we need to listen
// for the closing event instead, as the form will already be disposed
// by the time Closed is raised.
if (disposeForm)
{
form.Closed += new EventHandler(ModalForm_Closed);
}
else
{
form.Closing += new System.ComponentModel.CancelEventHandler(ModalForm_Closing);
}
form.Show();
form.Capture = true;
IntPtr hwnd = Win32Window.GetCapture();
form.Capture = false;
ThreadWindows previousThreadWindows = threadWindows;
threadWindows = new ThreadWindows(hwnd);
threadWindows.previousThreadWindows = previousThreadWindows;
threadWindows.Enable(false);
// enters dialog window loop
LocalModalMessageLoop();
result = form.DialogResult;
if(threadWindows != null)
{
threadWindows = threadWindows.previousThreadWindows;
}
if(disposeForm)
{
form.Closed -= new EventHandler(ModalForm_Closed);
form.Dispose();
}
else
{
form.Closing -= new System.ComponentModel.CancelEventHandler(ModalForm_Closing);
}
if (IsWindow(lastWnd) && IsWindowVisible(lastWnd))
{
SetActiveWindow(lastWnd);
}
#endif
return result;
}
