Question

MFC中，我在初始化函数中对一个对话框隐藏了一部分，怎样通过点击一个按钮还原

隐藏代码如下：
if(GetDlgItemText(IDC_CONTRACT,str),"扩展>>"==str)
{
SetDlgItemText(IDC_CONTRACT,"收缩<<");
}
else
{
SetDlgItemText(IDC_CONTRACT,"扩展>>");
}

CRect rectLarge;
CRect rectSmall;
CRect rectLeft;

GetWindowRect(&rectLarge);
GetDlgItem(IDC_LEFT)->GetWindowRect(&rectLeft);

rectSmall.left=rectLarge.left;
rectSmall.top=rectLarge.top;
rectSmall.right=rectLarge.right;
rectSmall.bottom=rectLeft.bottom;

if("收缩<<"==str)
{
SetWindowPos(NULL,0,0,rectLarge.Width(),rectLarge.Height(),
SWP_NOMOVE | SWP_NOZORDER);
}
else
{
SetWindowPos(NULL,0,0,rectSmall.Width(),rectSmall.Height(),
SWP_NOMOVE | SWP_NOZORDER);
}

return TRUE; // return TRUE unless you set the focus to a control
}

void CCalculator1Dlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialog::OnSysCommand(nID, lParam);
}

Answer 1

隐藏你都会,还原应该也会,这样做:
1.CRect rectLarge 定义为类的成员变量,不要放在初始化里定义
2.点击一个按钮后调用SetWindowPos修改窗口大小和rectLarge 一样