atl中有窗口句柄引出的问题

Question

     atl做acitvex控件，中间有语句
         ((CStatic *)hWnd5)->GetWindowRect(&orirc);
运行到此时报错
Unhandled exception in Mby.exe MFC42D.DLL :0xC0000005;Access Violation 
然后停留在：
{ ASSERT(::IsWindow(m_hWnd)); ::GetWindowRect(m_hWnd, lpRect); }
这是杂回事哦！

Answer 1

hWnd5是什么类型的?
为啥要强制转化?

Answer 2

hwnd5是getdlgitem（idc_static5）的值
无法用classwizard获得

Answer 3

你先看看hwnd5是什么类型,是不是空指针还是HWND类型
最好贴出你怎么给hwnd5赋值的

Answer 4

LRESULT OnInitDialog(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
hWnd5 =GetDlgItem(IDC_STATIC5);
    hWnd6 =GetDlgItem(IDC_STATIC6);
    hWnd7 =GetDlgItem(IDC_STATIC7);
    hWnd8 =GetDlgItem(IDC_STATIC8);
MP4_ClientSetNetPort(5050,6050);
MP4_ClientStartup(WM_MYCOMMAND,this->m_hWnd);
blarged=FALSE; return 0;
}
LRESULT OnClickedStatic5(WORD wNotifyCode, WORD wID, HWND hWndCtl, BOOL& bHandled)
{CRect orirc;
if (nn1 >= 0 )
{
MP4_ClientAudioStart(nn1);
MP4_ClientAudioVolume(0xfff0);
}
if (blarged)
{
ScreenToClient((LPPOINT)&orirc);
ScreenToClient((LPPOINT)&orirc+1); ((CStatic *)hWnd5)->MoveWindow(orirc,TRUE);
((CStatic *)hWnd6)->ShowWindow(SW_SHOW);
((CStatic *)hWnd7)->ShowWindow(SW_SHOW);
((CStatic *)hWnd8)->ShowWindow(SW_SHOW); blarged = FALSE;
}
else
{
((CStatic *)hWnd5)->GetWindowRect(&orirc);
    ((CStatic *)hWnd6)->ShowWindow(SW_HIDE);
((CStatic *)hWnd7)->ShowWindow(SW_HIDE);
((CStatic *)hWnd8)->ShowWindow(SW_HIDE);
     RECT XX;
        GetClientRect(&XX);
((CStatic *)hWnd5)->MoveWindow(0,0,XX.right ,XX.bottom ,TRUE);
//m_video5.MoveWindow(10,10,(int)(352*1.6),(int)(288*1.6),TRUE);
blarged = TRUE;

}
Fire_click();
return 0;
}非空，难道我强制转化他就空了？用mfc的话估计没这个问题了

Answer 5

CWindow wnd5 =GetDlgItem(IDC_STATIC5);
...wnd5.MoveWindow(orirc,TRUE);
....

Answer 6

果然，csdn真是好地方，人才啊，谢谢楼上的啊