protected override bool ProcessCmdKey(ref Message m, Keys keyData)
{
bool processed = false;
Form form = this.FindForm();
FormEx formEx = FormEx.FindFormEx(form);
if (formEx != null)
{
processed = formEx.RelayProcessCmdKey(keyData);
}
return(processed);
}
internal static FormEx FindFormEx(Form host)
{
if (host != null)
{
Control.ControlCollection controls = host.Controls;
for (int i = 0; i < controls.Count; ++i)
{
FormEx formEx = controls[i] as FormEx;
if (formEx != null)
{
return(formEx);
}
}
}
return(null);
}
/// <summary>
/// Manages some special handling of window messages.
/// </summary>
/// <param name="m"></param>
/// <returns>true if the message was handled, false if the caller should handle the message.</returns>
public bool HandleParentWndProc(ref Message m)
{
bool returnVal = true;
switch (m.Msg)
{
case NativeConstants.WM_NCPAINT:
goto default;
case NativeConstants.WM_NCACTIVATE:
if (this.forceActiveTitleBar && m.WParam == IntPtr.Zero)
{
if (ignoreNcActivate > 0)
{
--ignoreNcActivate;
goto default;
}
else if (Form.ActiveForm != this.host || // Gets rid of: if you have the form active, then click on the desktop --> desktop refreshes
!this.host.Visible) // Gets rid of: desktop refresh on exit
{
goto default;
}
else
{
// Only 'lock' for the topmost form in the application. Otherwise you get the whole system
// refreshing (i.e. the dreaded "repaint the whole desktop 5 times" glitch) when you do things
// like minimize the window
// And only lock if we aren't minimized. Otherwise the desktop refreshes.
bool locked = false;
if (this.host.Owner == null &&
this.host.WindowState != FormWindowState.Minimized)
{
//UI.SetControlRedraw(this.host, false);
locked = true;
}
this.realParentWndProc(ref m);
SafeNativeMethods.SendMessageW(this.host.Handle, NativeConstants.WM_NCACTIVATE,
new IntPtr(1), IntPtr.Zero);
if (locked)
{
//UI.SetControlRedraw(this.host, true);
//this.host.Invalidate(true);
}
break;
}
}
else
{
goto default;
}
case NativeConstants.WM_ACTIVATE:
goto default;
case NativeConstants.WM_ACTIVATEAPP:
this.realParentWndProc(ref m);
// Check if the app is being deactivated
if (this.forceActiveTitleBar && m.WParam == IntPtr.Zero)
{
// If so, put our titlebar in the inactive state
SafeNativeMethods.PostMessageW(this.host.Handle, NativeConstants.WM_NCACTIVATE,
IntPtr.Zero, IntPtr.Zero);
++ignoreNcActivate;
}
if (m.WParam == new IntPtr(1))
{
foreach (Form childForm in this.host.OwnedForms)
{
FormEx childFormEx = FindFormEx(childForm);
if (childFormEx != null)
{
if (childFormEx.ForceActiveTitleBar && childForm.IsHandleCreated)
{
SafeNativeMethods.PostMessageW(childForm.Handle, NativeConstants.WM_NCACTIVATE,
new IntPtr(1), IntPtr.Zero);
}
}
}
FormEx ownerEx = FindFormEx(this.host.Owner);
if (ownerEx != null)
{
if (ownerEx.ForceActiveTitleBar && this.host.Owner.IsHandleCreated)
{
SafeNativeMethods.PostMessageW(this.host.Owner.Handle, NativeConstants.WM_NCACTIVATE,
new IntPtr(1), IntPtr.Zero);
}
}
}
break;
default:
returnVal = false;
break;
}
GC.KeepAlive(this.host);
return(returnVal);
}
