if( nChar == L'C' && GetKeyState(VK_CONTROL) < 0 ) 没反应呢,该怎么解决

if( nChar == L'C' && GetKeyState(VK_CONTROL) < 0 ) 没反应呢
nChar用67测试也没反应！！

C/C++ code

BEGIN_MESSAGE_MAP(CMainWindow,CFrameWnd)
    
    ON_WM_CHAR()

END_MESSAGE_MAP()


void CMainWindow::OnChar( UINT nChar, UINT nRepCnt, UINT nFlags )
{
    if( nChar == L'C' &&  GetKeyState(VK_CONTROL) < 0 )
        MessageBox(L"复制");
}

------解决方案--------------------
要在PretranslateMessage里面才行。

------解决方案--------------------
nChar

Contains the character code value of the key.

------解决方案--------------------
Ctrl Shift之类的控制键无法在OnChar中获取到，因为不是字符。
如jennyvenus所说用PretranslateMessage截获消息：
sample code here :

C/C++ code


BOOL CXXEdit::PreTranslateMessage(MSG* pMsg) 
{
    if(WM_KEYDOWN == pMsg->message)   
    {  
        if(::GetFocus() == m_hWnd && (GetKeyState( VK_CONTROL) & 0xFF00 ) == 0xFF00)   
        {
            // 全选  
            if( pMsg->wParam == 'A' || pMsg->wParam == 'a')  
            {  
                this->SetSel(0, -1);  
                return true;  
            }  

            // 拷贝  
            if( pMsg->wParam == 'C' || pMsg->wParam == 'c')  
            {  
                this->Copy();  
                return true;  
            }  

            // 剪切  
            if( pMsg->wParam == 'X' || pMsg->wParam == 'x')  
            {  
                this->Cut();  
                return true;  
            }  

            // 粘贴  
            if( pMsg->wParam == 'V' || pMsg->wParam == 'v')  
            {
                this->Paste();
                return true;  
            }  

            // 粘贴  
            if( pMsg->wParam == 'Z' || pMsg->wParam == 'z')  
            {  
                this->Undo();  
                return true;  
            }  

        }  
    }  

    return CEdit::PreTranslateMessage(pMsg);  
 
}

if( nChar == L'C' && GetKeyState(VK_CONTROL) < 0 ) 没反应呢,该怎么解决

相关推荐