很多应用程序需要记住上一次窗口的位置和状态信息（最大化、最小化和正常），
我们在这里来完成该功能。
下面是存储窗口的位置代码：
void CMainFrame::OnClose() // message handler for WM_CLOSE
{
// Save main window position
CWinApp* app = AfxGetApp();
WINDOWPLACEMENT wp;
GetWindowPlacement(&wp);
app->WriteProfileInt("Frame", "Status", wp.showCmd);
app->WriteProfileInt("Frame", "Top", wp.rcNormalPosition.top);
app->WriteProfileInt("Frame", "Left", wp.rcNormalPosition.left);
app->WriteProfileInt("Frame", "Bottom", wp.rcNormalPosition.bottom);
app->WriteProfileInt("Frame", "Right", wp.rcNormalPosition.right);
CFrameWnd::OnClose();
}
下面是获取窗口的位置：
BOOL CMainFrame: reCreateWindow(CREATESTRUCT& cs)
{
//
// Restore main window position
//
CWinApp* app = AfxGetApp();
int s, t, b, r, l;
// only restore if there is a previously saved position
if ( -1 != (s = app->GetProfileInt("Frame", "Status", -1)) &&
-1 != (t = app->GetProfileInt("Frame", "Top", -1)) &&
-1 != (l = app->GetProfileInt("Frame", "Left", -1)) &&
-1 != (b = app->GetProfileInt("Frame", "Bottom", -1)) &&
-1 != (r = app->GetProfileInt("Frame", "Right", -1))
) {
// restore the window's status
app->m_nCmdShow = s;
// restore the window's width and height
cs.cx = r - l;
cs.cy = b - t;
// the following correction is needed when the taskbar is
// at the left or top and it is not "auto-hidden"
RECT workArea;
SystemParametersInfo(SPI_GETWORKAREA, 0, &workArea, 0);
l += workArea.left;
t += workArea.top;
// make sure the window is not completely out of sight
int max_x = GetSystemMetrics(SM_CXSCREEN) -
GetSystemMetrics(SM_CXICON);
int max_y = GetSystemMetrics(SM_CYSCREEN) -
GetSystemMetrics(SM_CYICON);
cs.x = min(l, max_x);
cs.y = min(t, max_y);
}
return CFrameWnd:reCreateWindow(cs);
}
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