孙鑫VC++深入详解:Lesson7 Part3---对话框伸缩功能的实现

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// 收缩按钮实现对话框伸缩功能
void CTestDlg::OnButton2() 
{// TODO: Add your control notification handler code hereCString str;if(GetDlgItemText(IDC_BUTTON2,str),str=="收缩<<"){SetDlgItemText(IDC_BUTTON2,"伸展>>");	}else if(str=="伸展>>"){SetDlgItemText(IDC_BUTTON2,"收缩<<");		}static CRect rectLarge,rectSmall;CRect rectSeparator;if(rectLarge.IsRectEmpty()){GetWindowRect(&rectLarge);GetWindowRect(&rectSmall);	GetDlgItem(IDC_SEPERATOR)->GetWindowRect(&rectSeparator);rectSmall.bottom = rectSeparator.bottom;		}if(str=="收缩<<"){// 用了SWP_NOZORDER,就忽略第一个参数,故用NULL// 用SWP_NOMOVE,就忽略了x和y,故用0,0SetWindowPos(NULL,0,0,rectSmall.Width(),rectSmall.Height(),SWP_NOMOVE|SWP_NOZORDER);}else{SetWindowPos(NULL,0,0,rectLarge.Width(),rectLarge.Height(),SWP_NOMOVE|SWP_NOZORDER);}}//CTestDlg::OnOK() 覆盖基类的OnOk(),但是它末尾还是调用了基类的CDialog::OnOK(),因为要注释掉它
void CTestDlg::OnOK() 
{// TODO: Add extra validation here//	CDialog::OnOK(); //注释掉基类的OnOk(),这按回车键就不会关闭对话框了.
}

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