C#中如何对当前窗体进行打印预览
点击次数：30 次 发布日期：2008-11-26 15:03:07 作者：源代码网
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public static extern long BitBlt (IntPtr hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, IntPtr hdcSrc, int nXSrc, int nYSrc, int dwRop); private Bitmap memoryImage; private void CaptureScreen() { Graphics mygraphics = this.CreateGraphics(); Size s = this.Size; memoryImage = new Bitmap(s.Width, s.Height, mygraphics); Graphics memoryGraphics = Graphics.FromImage(memoryImage); IntPtr dc1 = mygraphics.GetHdc(); IntPtr dc2 = memoryGraphics.GetHdc(); BitBlt(dc2, 0, 0, this.ClientRectangle.Width, this.ClientRectangle.Height, dc1, 0, 0, 13369376); mygraphics.ReleaseHdc(dc1); memoryGraphics.ReleaseHdc(dc2); } private void printDocument1_PrintPage(System.Object sender, System.Drawing.Printing.PrintPageEventArgs e) { e.Graphics.DrawImage(memoryImage, 0, 0); } private void printButton_Click(System.Object sender, System.EventArgs e) { CaptureScreen(); printPreviewDialog1.Show();  源代码网供稿. |
