// Enables windows in preparation of stopping modal. If parameter is true, we enable all windows,
// if false, only windows forms windows (i.e., windows controlled by this MsoComponent).
// See also IMsoComponent.OnEnterState.
internal void EnableWindowsForModalLoop(bool onlyWinForms, ApplicationContext context) {
Debug.WriteLineIf(CompModSwitches.MSOComponentManager.TraceInfo, "ComponentManager : Leaving modal state");
if (threadWindows != null) {
threadWindows.Enable(true);
Debug.Assert(threadWindows != null, "OnEnterState recursed, but it's not supposed to be reentrant");
threadWindows = threadWindows.previousThreadWindows;
}
ModalApplicationContext modalContext = context as ModalApplicationContext;
if (modalContext != null) {
modalContext.DisableThreadWindows(false, onlyWinForms);
}
}
// 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);
}
}
/// <include file='doc\Application.uex' path='docs/doc[@for="Application.ThreadContext.DisposeThreadWindows"]/*' />
/// <devdoc>
/// Gets rid of all windows in this thread context. Nulls out
/// window objects that we hang on to.
/// </devdoc>
internal void DisposeThreadWindows() {
// We dispose the main window first, so it can perform any
// cleanup that it may need to do.
//
try {
if (applicationContext != null) {
applicationContext.Dispose();
applicationContext = null;
}
// Then, we rudely destroy all of the windows on the thread
//
ThreadWindows tw = new ThreadWindows(true);
tw.Dispose();
// And dispose the parking form, if it isn't already
//
DisposeParkingWindow();
}
catch {
}
}
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;
}
