标  题: 如何获取一个对话控件的指针                       
发信人: Pacific (无情~~~Nolove), 信区: VisualC
发信站: BBS 水木清华站 (Fri Oct 16 17:13:22 1998)


    有两种方法。其一，调用CWnd: : GetDlgItem，获取一个CWnd*指针调用成            
员函数。下例调用GetDlgItem，将返回值传给一个CSpinButtonCtrl*以便调用             
CSpinButtonCtrl : : SetPos 函数：                                                
BOOL CSampleDialog : : OnInitDialog ( )                                          
{                                                                                
    CDialog : : OnInitDialog ( ) ;                                               
                                                                                 
    //Get pointer to spin button .                                               
    CSpinButtonCtrl * pSpin - ( CSpinButtonCtrl *) GetDlgItem (IDC_SPIN) ;       
    ASSERT _ VALID (pSpin) ;                                                     
                                                                                 
    //Set spin button's default position .                                       
    pSpin —> SetPos (10) ;                                                      
                                                                                 
    return TRUE ;                                                                
}                                                                                
    其二， 可以使用ClassWizard将控件和成员变量联系起来。在ClassWizard中简        
单地选择Member Variables标签，然后选择Add Variable …按钮。如果在对话资源        
编辑器中，按下Ctrl键并双击控件即可转到Add Member Variable对话。                  
34、如何禁止和使能控件                                                           
                                                                                 
    控件也是窗口，所以可以调用CWnd : : EnableWindow使能和禁止控件。              
//Disable button controls .                                                      
m_wndOK.EnableWindow (FALSE ) ;                                                  
m_wndApply.EnableWindow (FALSE ) ;                                               
                                                                                 

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※ 修改:．fzx 于 Aug  9 16:51:07 修改本文．[FROM: heart.hit.edu.cn]