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【转】C#检查键盘大小写锁定状态的方法_c#怎么判断锁定大写

作者：从前慢现在也慢 | 2024-03-20 09:58:09

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c#怎么判断锁定大写

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本文实例讲述了C#检查键盘大小写锁定状态的方法。分享给大家供大家参考。具体分析如下：

1、命名空间：

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using System.Runtime.InteropServices;

2、导入方法

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[DllImport("user32.dll", EntryPoint = "GetKeyboardState")]

public static extern int GetKeyboardState(byte[] pbKeyState);

3、大小写状态

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public static bool CapsLockStatus

{

get

{

byte[] bs = new byte[256];

GetKeyboardState(bs);

return (bs[0x14] == 1);

}

}

4、引用，此部分根据你的需要来修改

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private void button2_Click(object sender, EventArgs e)

{

if (CapsLockStatus == true)

MessageBox.Show("键盘处于大写锁定状态！");

else

MessageBox.Show("键盘处于小写状态！");

}

5.键盘VK键值表---完整

  1. 键盘VK键值列表
  2. /* Virtual Keys, Standard Set*/
  3. VK_LBUTTON                                      0x01
  4. VK_RBUTTON                                     0x02
  5. VK_CANCEL                                    0x03
  6. VK_MBUTTON                                     0x04
  7. #define VK_LBUTTON        0x01    //鼠标左键
  8. #define VK_RBUTTON        0x02    //鼠标右键 
  9. #define VK_CANCEL         0x03    //Ctrl + Break
  10. #define VK_MBUTTON        0x04    //鼠标中键/* NOT contiguous with L & RBUTTON */
  11. #define VK_BACK           0x08   //Backspace 键
  12. #define VK_TAB            0x09   //Tab 键
  13. #define VK_CLEAR          0x0C
  14. #define VK_RETURN         0x0D   //回车键
  15. #define VK_SHIFT          0x10
  16. #define VK_CONTROL        0x11
  17. #define VK_MENU           0x12   //Alt 键
  18. #define VK_PAUSE          0x13
  19. #define VK_CAPITAL        0x14   //Caps Lock 键 
  20. #define VK_KANA           0x15
  21. #define VK_HANGEUL        0x15 /* old name - should be here for compatibility */
  22. #define VK_HANGUL         0x15
  23. #define VK_JUNJA          0x17
  24. #define VK_FINAL          0x18
  25. #define VK_HANJA          0x19
  26. #define VK_KANJI          0x19
  27. #define VK_ESCAPE         0x1B   //Esc 键
  28. #define VK_CONVERT        0x1C
  29. #define VK_NONCONVERT     0x1D
  30. #define VK_ACCEPT         0x1E
  31. #define VK_MODECHANGE     0x1F
  32. #define VK_SPACE          0x20   //空格
  33. #define VK_PRIOR          0x21   //Page Up 键
  34. #define VK_NEXT           0x22   //Page Down 键
  35. #define VK_END            0x23   //End 键
  36. #define VK_HOME           0x24   //Home 键
  37. #define VK_LEFT           0x25  /*方向键*/
  38. #define VK_UP             0x26
  39. #define VK_RIGHT          0x27
  40. #define VK_DOWN           0x28
  41. #define VK_SELECT         0x29
  42. #define VK_PRINT          0x2A
  43. #define VK_EXECUTE        0x2B
  44. #define VK_SNAPSHOT       0x2C   //Print Screen 键
  45. #define VK_INSERT         0x2D  //Insert键
  46. #define VK_DELETE         0x2E  //Delete键
  47. #define VK_HELP           0x2F
  48. /* VK_0 thru VK_9 are the same as ASCII '0' thru '9' (0x30 - 0x39) */
  49. /* VK_A thru VK_Z are the same as ASCII 'A' thru 'Z' (0x41 - 0x5A) */
  50. #define VK_LWIN           0x5B //左WinKey(104键盘才有) 
  51. #define VK_RWIN           0x5C //右WinKey(104键盘才有)
  52. #define VK_APPS           0x5D //AppsKey(104键盘才有) 
  53. #define VK_NUMPAD0        0x60 //小键盘0-9
  54. #define VK_NUMPAD1        0x61
  55. #define VK_NUMPAD2        0x62
  56. #define VK_NUMPAD3        0x63
  57. #define VK_NUMPAD4        0x64
  58. #define VK_NUMPAD5        0x65
  59. #define VK_NUMPAD6        0x66
  60. #define VK_NUMPAD7        0x67
  61. #define VK_NUMPAD8        0x68
  62. #define VK_NUMPAD9        0x69
  63. #define VK_MULTIPLY       0x6A //乘
  64. #define VK_ADD            0x6B //加
  65. #define VK_SEPARATOR      0x6C //除
  66. #define VK_SUBTRACT       0x6D //减
  67. #define VK_DECIMAL        0x6E //小数点
  68. #define VK_DIVIDE         0x6F 
  69. #define VK_F1             0x70 //功能键F1-F24
  70. #define VK_F2             0x71
  71. #define VK_F3             0x72
  72. #define VK_F4             0x73
  73. #define VK_F5             0x74
  74. #define VK_F6             0x75
  75. #define VK_F7             0x76
  76. #define VK_F8             0x77
  77. #define VK_F9             0x78
  78. #define VK_F10            0x79
  79. #define VK_F11            0x7A
  80. #define VK_F12            0x7B
  81. #define VK_F13            0x7C
  82. #define VK_F14            0x7D
  83. #define VK_F15            0x7E
  84. #define VK_F16            0x7F
  85. #define VK_F17            0x80
  86. #define VK_F18            0x81
  87. #define VK_F19            0x82
  88. #define VK_F20            0x83
  89. #define VK_F21            0x84
  90. #define VK_F22            0x85
  91. #define VK_F23            0x86
  92. #define VK_F24            0x87
  93. #define VK_NUMLOCK        0x90 //Num Lock 键
  94. #define VK_SCROLL         0x91 //Scroll Lock 键
  95. /*
  96. * VK_L* & VK_R* - left and right Alt, Ctrl and Shift virtual keys.
  97. * Used only as parameters to GetAsyncKeyState() and GetKeyState().
  98. * No other API or message will distinguish left and right keys in this way.
  99. */
  100. #define VK_LSHIFT          0xA0
  101. #define VK_RSHIFT          0xA1
  102. #define VK_LCONTROL        0xA2
  103. #define VK_RCONTROL        0xA3
  104. #define VK_LMENU           0xA4
  105. #define VK_RMENU           0xA5
  106. #if(WINVER >= 0x0400)
  107. #define VK_PROCESSKEY      0xE5
  108. #endif /* WINVER >= 0x0400 */
  109. #define VK_ATTN            0xF6
  110. #define VK_CRSEL           0xF7
  111. #define VK_EXSEL           0xF8
  112. #define VK_EREOF           0xF9
  113. #define VK_PLAY            0xFA
  114. #define VK_ZOOM            0xFB
  115. #define VK_NONAME          0xFC
  116. #define VK_PA1             0xFD
  117. #define VK_OEM_CLEAR       0xFE

 

 

 

 

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