Control.DrawToBitmap上的参数异常 - 不是由大图像引起的。 Plz帮助 [英] Argument Exception on Control.DrawToBitmap - Not Caused By Large Image. Plz Help

问题描述

    public System.Drawing.Bitmap GetAsBitmap(System.Windows.Forms.Control control)
    {
      System.Drawing.Graphics g = control.CreateGraphics();
      System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(AboutForm.btnClose.Width, AboutForm.btnClose.Height);
      System.Drawing.Rectangle r = new System.Drawing.Rectangle(0,0, bmp.Width, bmp.Height);
      control.DrawToBitmap(bmp, r); // Exception here
      return bmp;
    }

以上是我正在使用的代码， 我只是希望能够绘制到位图，然后在我的应用程序中使用它的像素。

Above is the code that i am using,  i simply want to be able to draw to a bitmap and then use its pixels within my application.

我的目标是使用正常大小的窗口执行此操作，但是现在我做了它一个73x10的关闭按钮   （一点也不大） 确保我得到的Aurgument Exption不是由MSDN文档中的大事件引起的。
这里>>  http://msdn.microsoft.com/en-us/library/system.windows.forms.control.drawtobitmap.aspx

My Goal is to do this with a normal sized window, but for now i have it doing a close button that is 73x10   (not big at all)  to ensure that the Aurgument Exption that i am getting is not caused by somthing to big as per the MSDN documentation. Here >>  http://msdn.microsoft.com/en-us/library/system.windows.forms.control.drawtobitmap.aspx

然而， 我仍然得到错误，dosnt问题，如果我将它设置为3000或10x10  我仍然得到错误。

However,  i still get the error, dosnt matter if i set it to 3000 or 10x10   i still get the error.

现在即使是由于尺寸，  在四核3.4 ghz上，在Windows 7 64位上有8个ram，我应该能够至少超过5000x5000：P或更多

now even if it was due to size,   on a quad core 3.4 ghz with 8 gigs of ram on windows 7 64 bit, i should be able to go atleast past 5000x5000 :P or more

任何人都可以帮我这个吗？

Can any one help me with this?

谢谢

推荐答案

使用控件的宽度和高度来表示bmp的大小。 摆脱这两个陈述： 

Use the control's width and height for the size of bmp.  Get rid of these 2 statements: 

      System.Drawing.Graphics g = control.CreateGraphics（）;

      System.Drawing.Bitmap bmp = new System.Drawing.Bitmap（AboutForm.btnClose.Width，AboutForm.btnClose.Height）;

      System.Drawing.Graphics g = control.CreateGraphics();
      System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(AboutForm.btnClose.Width, AboutForm.btnClose.Height);

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