// Token: 0x06000059 RID: 89 RVA: 0x00007018 File Offset: 0x00005218
public void SetBits(Bitmap bitmap)
{
bool flag = Image.IsCanonicalPixelFormat(bitmap.PixelFormat) && Image.IsAlphaPixelFormat(bitmap.PixelFormat);
bool flag2 = flag;
bool flag3 = flag2;
bool flag4 = flag3;
bool flag5 = flag4;
bool flag6 = flag5;
bool flag7 = flag6;
bool flag8 = flag7;
bool flag9 = flag8;
if (flag9)
{
IntPtr hObj = IntPtr.Zero;
IntPtr dc = HelpWin32.GetDC(IntPtr.Zero);
IntPtr intPtr = IntPtr.Zero;
IntPtr intPtr2 = HelpWin32.CreateCompatibleDC(dc);
try
{
HelpWin32.Point point = new HelpWin32.Point(base.Left, base.Top);
HelpWin32.Size size = new HelpWin32.Size(bitmap.Width, bitmap.Height);
HelpWin32.BLENDFUNCTION blendfunction = default(HelpWin32.BLENDFUNCTION);
HelpWin32.Point point2 = new HelpWin32.Point(0, 0);
intPtr = bitmap.GetHbitmap(Color.FromArgb(0));
hObj = HelpWin32.SelectObject(intPtr2, intPtr);
blendfunction.BlendOp = 0;
blendfunction.SourceConstantAlpha = byte.MaxValue;
blendfunction.AlphaFormat = 1;
blendfunction.BlendFlags = 0;
HelpWin32.UpdateLayeredWindow(base.Handle, dc, ref point, ref size, intPtr2, ref point2, 0, ref blendfunction, 2);
return;
}
finally
{
bool flag10 = intPtr != IntPtr.Zero;
bool flag11 = flag10;
bool flag12 = flag11;
bool flag13 = flag12;
bool flag14 = flag13;
bool flag15 = flag14;
bool flag16 = flag15;
bool flag17 = flag16;
bool flag18 = flag17;
if (flag18)
{
HelpWin32.SelectObject(intPtr2, hObj);
HelpWin32.DeleteObject(intPtr);
}
HelpWin32.ReleaseDC(IntPtr.Zero, dc);
HelpWin32.DeleteDC(intPtr2);
}
}
throw new ApplicationException("图片必须是32位带Alhpa通道的图片。");
}
public static extern int UpdateLayeredWindow(IntPtr hwnd, IntPtr hdcDst, ref HelpWin32.Point pptDst, ref HelpWin32.Size psize, IntPtr hdcSrc, ref HelpWin32.Point pptSrc, int crKey, ref HelpWin32.BLENDFUNCTION pblend, int dwFlags);