internal void RefleshLayeredForm()
{
Bitmap formBitMap = new Bitmap(base.Width, base.Height);
Graphics g = Graphics.FromImage(formBitMap);
DrawShadow(g);
WinAPI.POINT ptSrc = new WinAPI.POINT(0, 0);
WinAPI.POINT ptWinPos = new WinAPI.POINT(base.Left, base.Top);
WinAPI.SIZE szWinSize = new WinAPI.SIZE(Width, Height);
byte biAlpha = 0xFF;
WinAPI.BLENDFUNCTION stBlend = new WinAPI.BLENDFUNCTION(
(byte)WinAPI.BlendOp.AC_SRC_OVER, 0, biAlpha, (byte)WinAPI.BlendOp.AC_SRC_ALPHA);
IntPtr gdiBitMap = IntPtr.Zero;
IntPtr memoryDC = IntPtr.Zero;
IntPtr preBits = IntPtr.Zero;
IntPtr screenDC = IntPtr.Zero;
try
{
screenDC = WinAPI.GetDC(IntPtr.Zero);
memoryDC = WinAPI.CreateCompatibleDC(screenDC);
gdiBitMap = formBitMap.GetHbitmap(Color.FromArgb(0));
preBits = WinAPI.SelectObject(memoryDC, gdiBitMap);
WinAPI.UpdateLayeredWindow(base.Handle
, screenDC
, ref ptWinPos
, ref szWinSize
, memoryDC
, ref ptSrc
, 0
, ref stBlend
, (uint)WinAPI.ULWPara.ULW_ALPHA);
}
finally
{
if (gdiBitMap != IntPtr.Zero)
{
WinAPI.SelectObject(memoryDC, preBits);
WinAPI.DeleteObject(gdiBitMap);
}
WinAPI.DeleteDC(memoryDC);
WinAPI.ReleaseDC(IntPtr.Zero, screenDC);
g.Dispose();
formBitMap.Dispose();
}
}
public void SetBits()
{
//绘制绘图层背景
Bitmap bitmap = new Bitmap(Main.Width + 10, Main.Height + 10);
Rectangle _BacklightLTRB = new Rectangle(20, 20, 20, 20);//窗体光泽重绘边界
Graphics g = Graphics.FromImage(bitmap);
g.SmoothingMode = SmoothingMode.HighQuality; //高质量
g.PixelOffsetMode = PixelOffsetMode.HighQuality; //高像素偏移质量
ImageDrawRect.DrawRect(g, shadowimg, ClientRectangle, Rectangle.FromLTRB(_BacklightLTRB.X, _BacklightLTRB.Y, _BacklightLTRB.Width, _BacklightLTRB.Height), 1, 1);
// RenderHelper.DrawImageWithNineRect(g, shadowimg, ClientRectangle, new Rectangle { Size = shadowimg.Size });
if (!Bitmap.IsCanonicalPixelFormat(bitmap.PixelFormat) || !Bitmap.IsAlphaPixelFormat(bitmap.PixelFormat))
{
throw new ApplicationException("图片必须是32位带Alhpa通道的图片。");
}
WinAPI.POINT ptSrc = new WinAPI.POINT(0, 0);
WinAPI.POINT ptWinPos = new WinAPI.POINT(base.Left, base.Top);
WinAPI.SIZE szWinSize = new WinAPI.SIZE(Width, Height);
byte biAlpha = 0xFF;
WinAPI.BLENDFUNCTION stBlend = new WinAPI.BLENDFUNCTION(
(byte)WinAPI.BlendOp.AC_SRC_OVER, 0, biAlpha, (byte)WinAPI.BlendOp.AC_SRC_ALPHA);
IntPtr gdiBitMap = IntPtr.Zero;
IntPtr memoryDC = IntPtr.Zero;
IntPtr preBits = IntPtr.Zero;
IntPtr screenDC = IntPtr.Zero;
try
{
screenDC = WinAPI.GetDC(IntPtr.Zero);
memoryDC = WinAPI.CreateCompatibleDC(screenDC);
gdiBitMap = bitmap.GetHbitmap(Color.FromArgb(0));
preBits = WinAPI.SelectObject(memoryDC, gdiBitMap);
WinAPI.UpdateLayeredWindow(base.Handle
, screenDC
, ref ptWinPos
, ref szWinSize
, memoryDC
, ref ptSrc
, 0
, ref stBlend
, (uint)WinAPI.ULWPara.ULW_ALPHA);
}
finally
{
if (gdiBitMap != IntPtr.Zero)
{
WinAPI.SelectObject(memoryDC, preBits);
WinAPI.DeleteObject(gdiBitMap);
}
WinAPI.DeleteDC(memoryDC);
WinAPI.ReleaseDC(IntPtr.Zero, screenDC);
g.Dispose();
bitmap.Dispose();
}
}
