Winform下去除MDI窗体边框
Posted Try and do it!
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做项目中间遇到了MDI窗体内边框的问题,经过苦苦寻找,最终得到了解决方案
在Main窗体中调用API
// Win32 Constants private const int GWL_STYLE = -16; private const int GWL_EXSTYLE = -20; private const int WS_BORDER = 0x00800000; private const int WS_EX_CLIENTEDGE = 0x00000200; private const uint SWP_NOSIZE = 0x0001; private const uint SWP_NOMOVE = 0x0002; private const uint SWP_NOZORDER = 0x0004; private const uint SWP_NOACTIVATE = 0x0010; private const uint SWP_FRAMECHANGED = 0x0020; private const uint SWP_NOOWNERZORDER = 0x0200; // Win32 方法 [DllImport("user32.dll", CharSet = CharSet.Auto)] private static extern int GetWindowLong(IntPtr hWnd, int Index); [DllImport("user32.dll", CharSet = CharSet.Auto)] private static extern int SetWindowLong(IntPtr hWnd, int Index, int Value); [DllImport("user32.dll", ExactSpelling = true)] private static extern int SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);
获取到API后在Form_Load事件中加入如下代码
//获取mdi客户区 for (int i = 0; i < this.Controls.Count; i++) { var mdiClientForm = this.Controls[i] as MdiClient; if (mdiClientForm == null) continue; // 找到了mdi客户区 // 取得客户区的边框 int style = GetWindowLong(mdiClientForm.Handle, GWL_STYLE); int exStyle = GetWindowLong(mdiClientForm.Handle, GWL_EXSTYLE); style &= ~WS_BORDER; exStyle &= ~WS_EX_CLIENTEDGE; // 调用win32设定样式 SetWindowLong(mdiClientForm.Handle, GWL_STYLE, style); SetWindowLong(mdiClientForm.Handle, GWL_EXSTYLE, exStyle); // 更新客户区 SetWindowPos(mdiClientForm.Handle, IntPtr.Zero, 0, 0, 0, 0, SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOOWNERZORDER | SWP_FRAMECHANGED); UpdateStyles(); break; }
重新运行程序,OK
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