public static void fSetBackground(System.Windows.Forms.Control control, Bitmap bitmap)
{
// Set our control's size to be the same as the bitmap
control.Width = bitmap.Width;
control.Height = bitmap.Height;
if (bitmap.PixelFormat != PixelFormat.Format32bppArgb)
{
throw new ApplicationException("must be 32 bits per pixel");
}
IntPtr hBitmap = IntPtr.Zero;
IntPtr oldBitmap = IntPtr.Zero;
IntPtr screenDc = Win32.GetDC(IntPtr.Zero);
IntPtr memDc = Win32.CreateCompatibleDC(screenDc);
try
{
hBitmap = bitmap.GetHbitmap(Color.FromArgb(0));
oldBitmap = Win32.SelectObject(memDc, hBitmap);
Win32.Size size = new Win32.Size(bitmap.Width, bitmap.Height);
Win32.Point pointSource = new Win32.Point(0, 0);
Win32.Point topPos = new Win32.Point(control.Left, control.Top);
Win32.BLENDFUNCTION blend = new Win32.BLENDFUNCTION();
blend.BlendOp = 0;
blend.BlendFlags = 0;
blend.SourceConstantAlpha = byte.MaxValue;
blend.AlphaFormat = 1;
Win32.UpdateLayeredWindow(control.Handle, screenDc, ref topPos, ref size, memDc, ref pointSource, 0, ref blend, 2);
}
catch (Exception ex)
{
throw ex;
}
finally
{
Win32.ReleaseDC(IntPtr.Zero, screenDc);
if (hBitmap != IntPtr.Zero)
{
Win32.SelectObject(memDc, oldBitmap);
Win32.DeleteObject(hBitmap);
}
Win32.DeleteDC(memDc);
}
}
public static void fSetBackground(System.Windows.Forms.Control control, Bitmap bitmap)
{
// Set our control's size to be the same as the bitmap
control.Width = bitmap.Width;
control.Height = bitmap.Height;
if (bitmap.PixelFormat != PixelFormat.Format32bppArgb)
{
throw new ApplicationException("must be 32 bits per pixel");
}
IntPtr hBitmap = IntPtr.Zero;
IntPtr oldBitmap = IntPtr.Zero;
IntPtr screenDc = Win32.GetDC(IntPtr.Zero);
IntPtr memDc = Win32.CreateCompatibleDC(screenDc);
try
{
hBitmap = bitmap.GetHbitmap(Color.FromArgb(0));
oldBitmap = Win32.SelectObject(memDc, hBitmap);
Win32.Size size = new Win32.Size(bitmap.Width, bitmap.Height);
Win32.Point pointSource = new Win32.Point(0, 0);
Win32.Point topPos = new Win32.Point(control.Left, control.Top);
Win32.BLENDFUNCTION blend = new Win32.BLENDFUNCTION();
blend.BlendOp = 0;
blend.BlendFlags = 0;
blend.SourceConstantAlpha = byte.MaxValue;
blend.AlphaFormat = 1;
Win32.UpdateLayeredWindow(control.Handle, screenDc, ref topPos, ref size, memDc, ref pointSource, 0, ref blend, 2);
}
catch (Exception ex)
{
throw ex;
}
finally
{
Win32.ReleaseDC(IntPtr.Zero, screenDc);
if (hBitmap != IntPtr.Zero)
{
Win32.SelectObject(memDc, oldBitmap);
Win32.DeleteObject(hBitmap);
}
Win32.DeleteDC(memDc);
}
}
