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[Win] Fix issue #33; fix issue #34

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This patch adds a workaround for WM_STYLECHANGED messages that are not
delivered when running on Mono/Windows. If we detect Mono, then we call
HandleStyleChanged() directly in order to update the internal state of
our WinGLNative instance.
This commit is contained in:
Stefanos A. 2014-01-08 22:29:22 +01:00
parent 51ad513dbb
commit 4af9d30ccb
1 changed files with 29 additions and 10 deletions
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39
Source/OpenTK/Platform/Windows/WinGLNative.cs
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@ -326,11 +326,13 @@ namespace OpenTK.Platform.Windows
void HandleStyleChanged(IntPtr handle, WindowMessage message, IntPtr wParam, IntPtr lParam)
{
WindowBorder new_border = windowBorder;
WindowBorder old_border = windowBorder;
WindowBorder new_border = old_border;
unsafe
{
if (wParam == new IntPtr((int)GWL.STYLE))
GWL get_window_style = (GWL)unchecked(wParam.ToInt32());
if ((get_window_style & (GWL.STYLE | GWL.EXSTYLE)) != 0)
{
WindowStyle style = ((StyleStruct*)lParam)->New;
if ((style & WindowStyle.Popup) != 0)
@ -569,8 +571,6 @@ namespace OpenTK.Platform.Windows
IntPtr WindowProcedure(IntPtr handle, WindowMessage message, IntPtr wParam, IntPtr lParam)
{
Debug.WriteLine(message.ToString());
switch (message)
{
#region Size / Move / Style events
@ -1249,34 +1249,35 @@ namespace OpenTK.Platform.Windows
WindowState state = WindowState;
ResetWindowState();
WindowStyle style = WindowStyle.ClipChildren | WindowStyle.ClipSiblings;
WindowStyle old_style = WindowStyle.ClipChildren | WindowStyle.ClipSiblings;
WindowStyle new_style = old_style;
switch (value)
{
case WindowBorder.Resizable:
style |= WindowStyle.OverlappedWindow;
new_style |= WindowStyle.OverlappedWindow;
break;
case WindowBorder.Fixed:
style |= WindowStyle.OverlappedWindow &
new_style |= WindowStyle.OverlappedWindow &
~(WindowStyle.ThickFrame | WindowStyle.MaximizeBox | WindowStyle.SizeBox);
break;
case WindowBorder.Hidden:
style |= WindowStyle.Popup;
new_style |= WindowStyle.Popup;
break;
}
// Make sure client size doesn't change when changing the border style.
Size client_size = ClientSize;
Win32Rectangle rect = Win32Rectangle.From(client_size);
Functions.AdjustWindowRectEx(ref rect, style, false, ParentStyleEx);
Functions.AdjustWindowRectEx(ref rect, new_style, false, ParentStyleEx);
// This avoids leaving garbage on the background window.
if (was_visible)
Visible = false;
Functions.SetWindowLong(window.Handle, GetWindowLongOffsets.STYLE, (IntPtr)(int)style);
Functions.SetWindowLong(window.Handle, GetWindowLongOffsets.STYLE, (IntPtr)(int)new_style);
Functions.SetWindowPos(window.Handle, IntPtr.Zero, 0, 0, rect.Width, rect.Height,
SetWindowPosFlags.NOMOVE | SetWindowPosFlags.NOZORDER |
SetWindowPosFlags.FRAMECHANGED);
@ -1288,6 +1289,24 @@ namespace OpenTK.Platform.Windows
Visible = true;
WindowState = state;
// Workaround for github issues #33 and #34,
// where WindowMessage.STYLECHANGED is not
// delivered when running on Mono/Windows.
if (Configuration.RunningOnMono)
{
StyleStruct style = new StyleStruct();
style.New = new_style;
style.Old = old_style;
unsafe
{
HandleStyleChanged(
window.Handle,
WindowMessage.STYLECHANGED,
new IntPtr((int)(GWL.STYLE | GWL.EXSTYLE)),
new IntPtr(&style));
}
}
}
}