CClrButton button_1; //新BUTTON类创建的对象
button_1.SubclassDlgItem(IDC_BUTTON1,this);//运行正常 CClrButton *p_button; //新BUTTON类创建的指针
p_button = (CClrButton*)GetDlgItem( IDC_BUTTON1) ;
p_button -> SubclassDlgItem(IDC_BUTTON1,this); //运行出错请教下用为什么出错了?
button_1.SubclassDlgItem(IDC_BUTTON1,this);//运行正常 CClrButton *p_button; //新BUTTON类创建的指针
p_button = (CClrButton*)GetDlgItem( IDC_BUTTON1) ;
p_button -> SubclassDlgItem(IDC_BUTTON1,this); //运行出错请教下用为什么出错了?
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p_button此时指向一个实际的按钮,所以出错了
button_1.SubclassDlgItem(IDC_BUTTON1,this);//运行正常