internal Cursor CreateCursor(BitmapSource renderBitmap, int width, int height)
{
// unfortunately, this byte array will get placed on the large object heap more than likely ...
byte[] pixels = GetBitmapPixels(renderBitmap, width, height);
// -height specifies top-down bitmap
BITMAPV5HEADER bInfo = new BITMAPV5HEADER(width, -height, 32);
IntPtr ppvBits = IntPtr.Zero;
BitmapHandle dibSectionHandle = null;
try
{
dibSectionHandle = new BitmapHandle(CreateDIBSection(IntPtr.Zero, ref bInfo, DIB_RGB_COLORS, out ppvBits, IntPtr.Zero, 0));
// copy the pixels into the DIB section now ...
Marshal.Copy(pixels, 0, ppvBits, pixels.Length);
if (!dibSectionHandle.IsInvalid && ppvBits != IntPtr.Zero)
{
return CreateCursor(width, height, dibSectionHandle);
}
}
finally
{
if (dibSectionHandle != null)
{
dibSectionHandle.Dispose();
}
}
return null;
}
private Cursor CreateCursor(int width, int height, BitmapHandle dibSectionHandle)
{
BitmapHandle monoBitmapHandle = null;
try
{
monoBitmapHandle = new BitmapHandle(CreateBitmap(width, height, 1, 1, IntPtr.Zero));
ICONINFO icon = new ICONINFO();
icon.IsIcon = false;
icon.xHotspot = 0;
icon.yHotspot = 0;
icon.ColorBitmap = dibSectionHandle;
icon.MaskBitmap = monoBitmapHandle;
_iconHandle = CreateIconIndirect(ref icon);
if (!_iconHandle.IsInvalid)
{
return CursorInteropHelper.Create(_iconHandle);
}
}
finally
{
// destroy the temporary mono bitmap now ...
if (monoBitmapHandle != null)
{
monoBitmapHandle.Dispose();
}
}
return null;
}