是这样的:
class CBookNameTree : public CTreeCtrl在BookNameTree.cpp 中
int CBookNameTree::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CTreeCtrl::OnCreate(lpCreateStruct) == -1)
return -1;
CMainFrame* MWnd = (CMainFrame*)AfxGetMainWnd();}结果MWnd 是0x00000000;
难道子窗口创建时框架窗口还没有创建??
那么CTreeCtrl在初始化时能不能得到主框架窗口???
调试跟入看看。