VkKeyScan

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
);

Parameters

ch

Specifies the character to be translated into a virtual-key code.

Return Values

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
	Either SHIFT key is pressed.
	Either CTRL key is pressed.
4	Either ALT key is pressed.

If the function finds no key that translates to the passed character code, both the low-order and high-order bytes contain 1.

Remarks

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.

See Also

GetAsyncKeyState, GetKeyboardState, GetKeyNameText, GetKeyState, SetKeyboardState, WM_KEYDOWN, WM_KEYUP

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