The VkKeyScan function translates a character to the corresponding virtual-key code and shift state for the current keyboard.
SHORT VkKeyScan(
TCHAR ch |
// character to translate |
); |
If the function succeeds, the low-order byte of the return value contains the virtual-key code and the high-order byte contains the shift state, which can be a combination of the following flag bits:
Bit |
Meaning |
1 |
Either SHIFT key is pressed. |
2 |
Either CTRL key is pressed. |
4 |
Either ALT key is pressed. |
8 |
The Hankaku key is pressed |
16 |
Reserved (defined by the keyboard layout driver). |
32 |
Reserved (defined by the keyboard layout driver). |
If the function finds no key that translates to the passed character code, both the low-order and high-order bytes contain -1.
For keyboard layouts that use the right-hand ALT key as a shift key (for example, the French keyboard layout), the shift state is represented by the value 6, because the right-hand ALT key is converted internally into CTRL+ALT.
Translations for the numeric keypad (VK_NUMPAD0 through VK_DIVIDE) are ignored. This function is intended to translate characters into keystrokes from the main keyboard section only. For example, the character “7” is translated into VK_7, not VK_NUMPAD7.
VkKeyScan is used by applications that send characters by using the WM_KEYUP and WM_KEYDOWN messages.
GetAsyncKeyState, GetKeyboardState, GetKeyNameText, GetKeyState, SetKeyboardState, WM_KEYDOWN, WM_KEYUP
file: /Techref/os/win/api/win32/func/src/f90_18.htm, 3KB, , updated: 2000/4/7 11:19, local time: 2024/11/5 07:27,
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