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分享程序中如何区分小键盘enter与大键盘enter键
如题，我查了一下大小键盘上的enter键值是相同的，那么我如何让它们分别起作用？
BOOL CKeyBoardTest::PreTranslateMessage(MSG* pMsg)
{
if (pMsg->message==WM_KEYDOWN)
{
switch (pMsg->wParam)
{
case ******:
messagebox("你按下去的是大键盘enter键")；
break;
case ……:
messagebox("你按下去的是小键盘enter键")；
break;
return true;
}
BOOL CKeyBoardTest::PreTranslateMessage(MSG* pMsg)
{
if (pMsg->message==WM_KEYDOWN)
{
switch (pMsg->wParam)
{
case ******:
messagebox("你按下去的是大键盘enter键")；
break;
case ……:
messagebox("你按下去的是小键盘enter键")；
break;
return true;
}
...全文
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schlafenhamster 2017-04-25
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好像 vc2012 不需要
pMsg->lParam |= 0x01000000;// bit24
「已注销」 2017-04-25
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For enhanced 101- and 102-key keyboards, extended keys are the right ALT and CTRL keys on the main section of the keyboard; the INS, DEL, HOME, END, PAGE UP, PAGE DOWN, and arrow keys in the clusters to the left of the numeric keypad; and the divide (/) and ENTER keys in the numeric keypad. Other keyboards may support the extended-key bit in the lParam parameter.
「已注销」 2017-04-25
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根据 #4 的代码，我找了一下 MSDN 的 WM_KEYDOWN 消息的说明，看到这些资料：
WM_KEYDOWN
wParam
virtual-key code
lParam
0~15 repeat code
16~23 scan code
24 extended key (flag)
25~28 not used
30 previous key state (flag)
31 transition state (flag)For enhanced 101- and 102-key keyboards, extended keys are the right ALT and CTRL keys on the main section of the keyboard; the INS, DEL, HOME, END, PAGE UP, PAGE DOWN, and arrow keys in the clusters to the left of the numeric keypad; and the divide (/) and ENTER keys in the numeric keypad. Other keyboards may support the extended-key bit in the lParam parameter.if (wParam == VK_RETURN) {
if (lParam & (1 << 24)) {
// 小键盘Enter
} else {
// 主键盘Enter
}
}
赵4老师 2017-04-24
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学习了！
schlafenhamster 2017-04-22
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#if 1 // use lParam = scancode.
if(pMsg->message == WM_KEYDOWN)
{// 0x21 0x2F
if (pMsg->wParam >= VK_PRIOR && pMsg->wParam <= VK_HELP)
{// for keypad （小键盘）
pMsg->lParam |= 0x01000000;// bit24
}
char str[40]={0};
if(GetKeyNameText(pMsg->lParam, str,40) > 0)
{
afxDump << str << "\n";
}
}
#endif
return CDialog::PreTranslateMessage(pMsg);
赵4老师 2017-04-21
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scan code
WM_KEYDOWN
The WM_KEYDOWN message is posted to the window with the keyboard focus when a nonsystem key is pressed. A nonsystem key is a key that is pressed when the alt key is not pressed.
WM_KEYDOWN
nVirtKey = (int) wParam; // virtual-key code
lKeyData = lParam; // key data
Parameters
nVirtKey
Value of wParam. Specifies the virtual-key code of the nonsystem key.
lKeyData
Value of lParam. Specifies the repeat count, scan code, extended-key flag, context code, previous key-state flag, and transition-state flag, as shown in the following table. Value Description
0–15 Specifies the repeat count for the current message. The value is the number of times the keystroke is auto-repeated as a result of the user holding down the key. If the keystroke is held long enough, multiple messages are sent. However, the repeat count is not cumulative.
16–23 Specifies the scan code. The value depends on the original equipment manufacturer (OEM).
24 Specifies whether the key is an extended key, such as the right-hand alt and ctrl keys that appear on an enhanced 101- or 102-key keyboard. The value is 1 if it is an extended key; otherwise, it is 0.
25–28 Reserved; do not use.
29 Specifies the context code. The value is always 0 for a WM_KEYDOWN message.
30 Specifies the previous key state. The value is 1 if the key is down before the message is sent, or it is 0 if the key is up.
31 Specifies the transition state. The value is always 0 for a WM_KEYDOWN message.
kakabulusi 2017-04-21
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从来没有遇到过回车键的区分，
不过你可以编写一段检测按键值的程序，将按键对应的所有值信息 MessageBox出来。然后你参照值来回写编写代码。
paschen 2017-04-21
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