请帮我解释一下

[coolgordon]

AfxGetMainWnd()->GetDlgItem(IDC_STATIC1)->m_hWnd
IDC_STATIC1是对话框中的一个picture控件,程序是基于对话框的

大概是取得IDC_STATIC1的句柄,但AfxGetMainWnd()->是干什么的呢?

[zhouyong0371]

获得主窗口的指针

[zhouyong0371]

BOOL CDlgLine2App::InitInstance()
{
AfxEnableControlContainer();

// Standard initialization
// If you are not using these features and wish to reduce the size
// of your final executable, you should remove from the following
// the specific initialization routines you do not need.

#ifdef _AFXDLL
Enable3dControls(); // Call this when using MFC in a shared DLL
#else
Enable3dControlsStatic(); // Call this when linking to MFC statically
#endif

CDlgLine2Dlg dlg;
m_pMainWnd = &dlg; //获得一个指针指向这个窗口。不过是CWnd的，不是HWND
int nResponse = dlg.DoModal();
if (nResponse == IDOK)
{
// TODO: Place code here to handle when the dialog is
// dismissed with OK
}
else if (nResponse == IDCANCEL)
{
// TODO: Place code here to handle when the dialog is
// dismissed with Cancel
}

// Since the dialog has been closed, return FALSE so that we exit the
// application, rather than start the application's message pump.
return FALSE;
}