C# 捕获窗体最小化、最大化事件

╰+哭是因爲堅強的太久メ 2022-02-09 09:49 1430阅读 0赞

个人代码：

private void HospitalInformation_SizeChanged(object sender, EventArgs e)
            {
                if (this.WindowState == FormWindowState.Maximized && btnModify.Top==btnClear.Top)//捕获窗体最大化事件
                {
                    btnModify.Top += 20;//更改按钮的位置
                    btnClear.Top += 60;
                    btnAdd.Top += 100;
                    dgvData.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill;//更改dgvData的AuotSizeColumnsMode属性
                }
                if (this.WindowState == FormWindowState.Normal)//捕获还原（Normal)事件
                {
                    btnModify.Top -= 20;
                    btnClear.Top -= 60;
                    btnAdd.Top -= 100;
                    dgvData.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.DisplayedCells;
                }
            }

转载一：[http://blog.csdn.net/yin554393109/article/details/7915484][http_blog.csdn.net_yin554393109_article_details_7915484]

窗体的Deactivate事件，判断窗体状态是否为最小化，其他事件判断会出现问题：

**\[csharp\]**  [view plain][] [copy][view plain] [print][view plain] [?][view plain]

1.  **private** **void** MainForm\_Deactivate(**object** sender, EventArgs e)  
2.          \{  
3.              **if** (**this**.WindowState == FormWindowState.Minimized)  
4.              \{  
5.                  **this**.notifyIcon1.Visible = **true**;  
6.                  **this**.Hide();  
7.                  **this**.ShowInTaskbar = **false**;  
8.              \}  
9.          \}

**notifyIcon单击显示**

**\[csharp\]**  [view plain][] [copy][view plain] [print][view plain] [?][view plain]

1.  **private** **void** notifyIcon1\_Click(**object** sender, EventArgs e)  
2.          \{  
3.              **this**.Show();  
4.              **this**.ShowInTaskbar = **true**;  
5.              **this**.WindowState = FormWindowState.Normal;  
6.              **this**.notifyIcon1.Visible = **false**;  
7.          \}

# 转载二：[http://blog.csdn.net/liuyuehui110/article/details/6513173][http_blog.csdn.net_liuyuehui110_article_details_6513173]    #

# [c\#捕获窗体的最大化最小化按钮的事件][c] #

protected override void OnResize(EventArgs e)   
        \{   
            if(WindowState == FormWindowState.Maximized)   
            \{   
                //最大化时所需的操作   
                MessageBox.Show("max");  
            \}   
            else if(WindowState == FormWindowState.Minimized)   
            \{   
                //最小化时所需的操作  
                MessageBox.Show("min");  
            \}   
        \}    
  
\*\*\*\*\*但是问题出现了，最大化以后，内部的控件不能随anchar发生变化。。。。。，问题出在哪里呢？  
于是又找到了一些代码，如下

虽然Form类没有提供Minimize的事件，但还是可以通过重载Deactive来实现  
当Form失去焦点后，测试WindowState取得Form状态，若为Minimized既是最小化事件。  
本例为最小化后隐藏窗口：

![None.gif][] private   void  Form1\_Deactivate( object  sender, EventArgs e)  
![ExpandedBlockStart.gif][]         \{  
![InBlock.gif][]            if (this.WindowState == FormWindowState.Minimized)  
![InBlock.gif][]                this.Visible = false;  
![ExpandedBlockEnd.gif][]        \}

还有种方法更加直接，重载WndProc：

![None.gif][] const   int  WM\_SYSCOMMAND  =   0x112 ;  
![None.gif][] const   int  SC\_CLOSE  =   0xF060 ;  
![None.gif][] const   int  SC\_MINIMIZE  =   0xF020 ;  
![None.gif][] const   int  SC\_MAXIMIZE  =   0xF030 ;  
![None.gif][] protected   override   void  WndProc( ref  Message m)  
![ExpandedBlockStart.gif][] \{  
![InBlock.gif][]    if (m.Msg == WM\_SYSCOMMAND)  
![ExpandedSubBlockStart.gif][]    \{  
![InBlock.gif][]        if (m.WParam.ToInt32() == SC\_MINIMIZE)  
![ExpandedSubBlockStart.gif][]        \{  
![InBlock.gif][]            this.Visible = false;  
![InBlock.gif][]            return;  
![ExpandedSubBlockEnd.gif][]        \}  
![ExpandedSubBlockEnd.gif][]    \}  
![InBlock.gif][]    base.WndProc(ref m);  
![ExpandedBlockEnd.gif][]\}

[http_blog.csdn.net_yin554393109_article_details_7915484]: http://blog.csdn.net/yin554393109/article/details/7915484
[view plain]: http://blog.csdn.net/yin554393109/article/details/7915484#
[http_blog.csdn.net_liuyuehui110_article_details_6513173]: http://blog.csdn.net/liuyuehui110/article/details/6513173
[c]: http://www.cnblogs.com/kingdi/archive/2006/09/04/494740.html
[None.gif]: /images/20220206/1c156644a0d048d28e5faf29f714c92a.png
[ExpandedBlockStart.gif]: /images/20220206/b14639ed1c2f45989515224d0c9884d2.png
[InBlock.gif]: /images/20220206/f70f2be1f6034fe08728246f29a66b71.png
[ExpandedBlockEnd.gif]: /images/20220206/1f1de0a8a0d7456aa74d804c374c3c9d.png
[ExpandedSubBlockStart.gif]: /images/20220206/326c8972b1ae44e6a88954efdf599284.png
[ExpandedSubBlockEnd.gif]: /images/20220206/8c7965d6374b490eb751331be9c0f892.png