使用c＃更改Datetimepicker控件的边框 [英] Change the Border of Datetimepicker Control using c#

问题描述

我想更改DateTinePicker控件的边框，我在windows窗体中添加了。

例如： - 就像我们将文本框的Border Style属性更改为固定单一时一样，我们可以看到文本框的黑色边框。

我怎么能在日期时间选择器控件中做同样的事情??

在此先感谢!!!

I want to change the border of DateTinePicker control, I have added in windows form.
for eg:- in the same way like when we change the Border Style property of textbox to fixed single then we can see black border to the textbox.
How can i do same in date time picker control ??
Thanks in Advance !!!

推荐答案

要实现控件的自定义外观，必须覆盖WndProc方法，该方法处理此控件的所有窗口消息。

To achieve the custom look for the control, you have to override the WndProc method, which is the method that processes all the window messages for this control.

protected override void WndProc(ref Message m)
  {
   IntPtr hDC = GetWindowDC(m.HWnd);
   Graphics gdc = Graphics.FromHdc(hDC);
   switch (m.Msg)
   {
    case WM_NC_PAINT:
     SendMessage(this.Handle, WM_ERASEBKGND, hDC, 0);
     SendPrintClientMsg();
     SendMessage(this.Handle, WM_PAINT, IntPtr.Zero, 0);
     OverrideControlBorder(gdc);

     m.Result = (IntPtr)1; // indicate msg has been processed
     break;
    case WM_PAINT: base.WndProc(ref m);
     OverrideControlBorder(gdc);
     OverrideDropDown(gdc);
     break;
      case  WM_NC_HITTEST:
     base.WndProc(ref m);
     if (DroppedDown)
      this.Invalidate(this.ClientRectangle, false);
     break;
    default:
     base.WndProc(ref m);
     break;
   }
   ReleaseDC(m.HWnd, hDC);
   gdc.Dispose();
  }

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