View视图获得文档指针失败？？急

Question

在App类的InitInstance中写入：
pAcquireDataDocTemplate = new CMultiDocTemplate(
IDR_BIOFORTYPE,
RUNTIME_CLASS(CAcquireDocTelp),
RUNTIME_CLASS(CChildFrame), // custom MDI child frame
RUNTIME_CLASS(CAcquireDataFormView));
AddDocTemplate(pAcquireDataDocTemplate);但是在AcquireDataFormView中使用CDocument *pDoc=GetDocument();为什么总得到NULL呢？
在线急等...

Answer 1

你自己修改了wizard生成的CAcquireDocTelp类名，就这么几句谁也看不清楚。

Answer 2

CAcquireDataFormView中实现了GetDocument()吗?CAcquireDocTelp* CAcquireDataFormView::GetDocument() // non-debug version is inline
{
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CAcquireDocTelp)));
return (CAcquireDocTelp*)m_pDocument;
}

Answer 3

AcquireDataFormDoc*pDoc=GetDocument();

Answer 4

CAcquireDataFormDoc *pDoc=GetDocument();

Answer 5

CAcquireDataFormDoc *pDoc=(CAcquireDataFormDoc*)GetDocument();