Form and Control KeyEvent_PHP Tutorial

Form and Control KeyEvent

一、Form的KeyEvent

KeyCode:

1. private void Form1_KeyDown(object sender, KeyEventArgs e)
   
2. {
   
3. if ((e.Modifiers == Keys.Control) && (e.KeyCode == Keys.Z))
   
4. {
   
5. this.cancelHandler();
   
6. }
   
7. else if ((e.Modifiers == Keys.Control) && (e.KeyCode == Keys.S))
   
8. {
   
9. this.saveHandler();
   
10. }
    
11. else
    
12. e.Handled = true;
    
13. }

二、Control’s KeyEvent

检测输入control的字符的正确性。

1. private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
   
2. {
   
3. if (e.KeyChar == 'b')
   
4. mPwFlag[0] = e.KeyChar;
   
5. if (e.KeyChar == 'a')
   
6. mPwFlag[1] = e.KeyChar;
   
7. if (e.KeyChar == 't')
   
8. mPwFlag[2] = e.KeyChar;
   
9. if (e.KeyChar == '1')
   
10. mPwFlag[0] = e.KeyChar;
    
11. if (e.KeyChar == '2')
    
12. mPwFlag[1] = e.KeyChar;
    
13. if (e.KeyChar == '3')
    
14. mPwFlag[2] = e.KeyChar;
    
15. 
    
16. if (mPwFlag[0] == 'b' && mPwFlag[1] == 'a' && mPwFlag[2] == 't')
    
17. {
    
18. mPwFlag[0] = '0';
    
19. mPwFlag[1] = '0';
    
20. mPwFlag[2] = '0';
    
21. BatCreateTopic bct = new BatCreateTopic(this);
    
22. this.button3.Visible = true;
    
23. bct.ShowDialog(this);
    
24. }
    
25. }