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translate Ctrl + alpha to control value for simple text input protocol

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3952 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qhuang8
2007-09-27 12:00:18 +00:00
parent 5364ee3303
commit 1f771698b2
2 changed files with 22 additions and 1 deletions
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13
MdeModulePkg/Bus/Usb/UsbKbDxe/keyboard.c
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@@ -857,7 +857,18 @@ USBKeyCodeToEFIScanCode (
}
}
//
// Translate the CTRL-Alpha characters to their corresponding control value (ctrl-a = 0x0001 through ctrl-Z = 0x001A)
//
if (UsbKeyboardDevice->CtrlOn) {
if (Key->UnicodeChar >= 'a' && Key->UnicodeChar <= 'z') {
Key->UnicodeChar = (UINT16) (Key->UnicodeChar - 'a' + 1);
} else if (Key->UnicodeChar >= 'A' && Key->UnicodeChar <= 'Z') {
Key->UnicodeChar = (UINT16) (Key->UnicodeChar - 'A' + 1);
}
}
if (KeyChar >= 0x59 && KeyChar <= 0x63) {
if (UsbKeyboardDevice->NumLockOn && !UsbKeyboardDevice->ShiftOn) {