private void _SetDwmAttributes(IntPtr hwnd)
{
if (Utility.IsOSVistaOrNewer)
{
DWMFLIP3D flipPolicy = this.Topmost ? DWMFLIP3D.EXCLUDEABOVE : DWMFLIP3D.EXCLUDEBELOW;
NativeMethods.DwmSetWindowAttributeFlip3DPolicy(hwnd, flipPolicy);
if (Utility.IsOSWindows7OrNewer)
{
NativeMethods.DwmSetWindowAttributeDisallowPeek(hwnd, true);
}
}
}
public static void DwmSetWindowAttributeFlip3DPolicy(IntPtr hwnd, DWMFLIP3D flip3dPolicy)
{
Assert.IsTrue(Utility.IsOSVistaOrNewer);
var dwPolicy = (int)flip3dPolicy;
_DwmSetWindowAttribute(hwnd, DWMWA.FLIP3D_POLICY, ref dwPolicy, sizeof(int));
}
public static void DwmSetWindowAttributeFlip3DPolicy(IntPtr hwnd, DWMFLIP3D flip3dPolicy)
{
int num = (int)flip3dPolicy;
NativeMethods._DwmSetWindowAttribute(hwnd, DWMWA.FLIP3D_POLICY, ref num, 4);
}
