/// <summary>
/// Sets the specified peek (live preview) bitmap for the specified
/// window. This is typically done in response to a DWM message.
/// </summary>
/// <param name="hwnd">The window handle.</param>
/// <param name="bitmap">The thumbnail bitmap.</param>
/// <param name="offset">The client area offset at which to display
/// the specified bitmap. The rest of the parent window will be
/// displayed as "remembered" by the DWM.</param>
/// <param name="displayFrame">Whether to display a standard window
/// frame around the bitmap.</param>
internal static void SetPeekBitmap(IntPtr hwnd, IntPtr bitmap, Point offset, bool displayFrame)
{
var nativePoint = new CoreNativeMethods.POINT(offset.X, offset.Y);
int rc = DwmSetIconicLivePreviewBitmap(
hwnd,
bitmap,
ref nativePoint,
displayFrame ? DWM_SIT_DISPLAYFRAME : (uint)0);
if (rc != 0)
{
Exception e = Marshal.GetExceptionForHR(rc);
if (e is ArgumentException)
{
// Ignore argument exception as it's not really recommended to be throwing
// exception when rendering the peek bitmap. If it's some other kind of exception,
// then throw it.
}
else
{
throw e;
}
}
}
internal static System.Drawing.Size GetNonClientArea(IntPtr hwnd)
{
var c = new CoreNativeMethods.POINT(0, 0);
TabbedThumbnailNativeMethods.ClientToScreen(hwnd, ref c);
var r = new CoreNativeMethods.RECT();
TabbedThumbnailNativeMethods.GetWindowRect(hwnd, ref r);
return(new System.Drawing.Size(c.X - r.left, c.Y - r.top));
}
internal static System.Drawing.Point GetParentOffsetOfChild(IntPtr hwnd, IntPtr hwndParent)
{
var childScreenCoord = new CoreNativeMethods.POINT(0, 0);
TabbedThumbnailNativeMethods.ClientToScreen(
hwnd, ref childScreenCoord);
var parentScreenCoord = new CoreNativeMethods.POINT(0, 0);
TabbedThumbnailNativeMethods.ClientToScreen(
hwndParent, ref parentScreenCoord);
System.Drawing.Point offset = new System.Drawing.Point(
childScreenCoord.X - parentScreenCoord.X,
childScreenCoord.Y - parentScreenCoord.Y);
return(offset);
}
internal static extern int DwmSetIconicLivePreviewBitmap(
IntPtr hwnd,
IntPtr hbitmap,
ref CoreNativeMethods.POINT ptClient,
uint flags);
internal static extern bool ClientToScreen(
IntPtr hwnd,
ref CoreNativeMethods.POINT point);
