使用OnKeyUp(UINT nChar，UINT nRepCnt，UINT nFlags)方法进行键捕获

问题描述

亲爱的所有人，

我正在使用MFC应用程序，此应用程序是使用VS2008编译的.
要捕获按下的键
OnKeyUp(UINT nChar，UINT nRepCnt，UINT nFlags)
使用方法.

发生的一件奇怪的事情是，当我按下不带大写锁定的键"a"时，其nChar值为"65"，假设为"97".

即使大写锁定为"ON"，当我按"A"时，我得到的值为"65".

问题是大写锁定处于打开状态或关闭状态，我得到的值与大写锁定处于打开状态相同. (所有键都是这种情况)

因为OnKeyUp()和MFC方法一样，所以我不确定如何解决此问题.

请帮助我，如果您需要更多信息，请通知我.


下面是我正在使用的代码，因此，发生这种情况是，当我使用SetDlgItemText()设置文本时，它总是以大写字母或单词的形式出现.

void CMyProg :: OnKeyUp(UINT nChar，UINT nRepCnt，UINT nFlags)
{
CString SBCommand;
CString Temp;
char * s = NULL;
char strnChar [10];

/*传递给命令框的字母和数字*/
if((nChar> = 65 && nChar< = 90)||(nChar> = 48 && nChar< = 57))
{
pFrame-> m_wndStatusBar.GetDlgItemText(IDC_SB_POINT，SBCommand);
Temp.Format(％c"，nChar);
SBCommand + =温度;
pFrame-> m_wndStatusBar.SetDlgItemText(IDC_SB_POINT，SBCommand);


/*pFrame->m_wndStatusBar.GetDlgItemText(IDC_SB_POINT,SBCommand);
SBCommand + =(字符*)nChar;
pFrame-> m_wndStatusBar.SetDlgItemText(IDC_SB_POINT，SBCommand); */
}
}

Dear All,

I am working MFC Application, this application is compiled using VS2008.
To capture the key pressed
OnKeyUp(UINT nChar, UINT nRepCnt, UINT nFlags)
method is used.

The strange thing happening is when i press the key "a" without caps lock its gives the nChar value as "65" which is suppose to be "97".

Even if the caps lock is "ON" the value i get is "65" when i press "A".

The thing is either the caps lock is on or off, i get the same value as if the caps lock is on. (this is the case with all the keys)

as the OnKeyUp() is as MFC method, I am not sure how to solve this issue.

Kindly help me and let me know if you require any more information.


Below is the code i am using, because of this what happens is, when i set a text using SetDlgItemText(), it is always going as Upper case letter or word.

void CMyProg::OnKeyUp(UINT nChar, UINT nRepCnt, UINT nFlags)
{
CString SBCommand;
CString Temp;
char *s = NULL;
char strnChar[10];

/* Alphabets and Numerals passed to the command box*/
if((nChar >= 65 && nChar <= 90) || (nChar >= 48 && nChar <= 57))
{
pFrame->m_wndStatusBar.GetDlgItemText(IDC_SB_POINT,SBCommand);
Temp.Format("%c",nChar);
SBCommand += Temp;
pFrame->m_wndStatusBar.SetDlgItemText(IDC_SB_POINT,SBCommand);


/*pFrame->m_wndStatusBar.GetDlgItemText(IDC_SB_POINT,SBCommand);
SBCommand += (char*)nChar;
pFrame->m_wndStatusBar.SetDlgItemText(IDC_SB_POINT,SBCommand);*/
}
}

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