C# WinForm 最大化、最小化、关闭按钮事件的拦截
C/C++ Code复制内容到剪贴板
- private int WM_SYSCOMMAND = 0x112;
- private long SC_MAXIMIZE = 0xF030;
- private long SC_MINIMIZE = 0xF020;
- private long SC_CLOSE = 0xF060;
- protected override void WndProc(ref Message m)
- {
- if (m.Msg == WM_SYSCOMMAND)
- {
- if (m.WParam.ToInt64() == SC_MAXIMIZE)
- {
- MessageBox.Show("MAXIMIZE ");
- return;
- }
- if (m.WParam.ToInt64() == SC_MINIMIZE)
- {
- MessageBox.Show("MINIMIZE ");
- return;
- }
- if (m.WParam.ToInt64() == SC_CLOSE)
- {
- MessageBox.Show("CLOSE ");
- return;
- }
- }
- base.WndProc(ref m);
- }