问题卡了很多天,csdn各种方法都试过了,没改明白
void CPrecisionCamView::OnDraw(CDC* pDC)
{
CPrecisionCamDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
if (!pDoc)
return;
//////////////////////////////////////////////////////////////////////////
if (pDoc->myView != NULL) ///////此处!=报错///////
{
CRect aRect;
GetWindowRect(aRect);
if(myWidth != aRect.Width() || myHeight != aRect.Height()) {
myWidth = aRect.Width();
myHeight = aRect.Height();
::PostMessage ( GetSafeHwnd() , WM_SIZE , SW_SHOW , myWidth + myHeight*65536 );
}
pDoc->myView->Redraw();
}
}
转到定义
Handle(V3d_View) myView;
继续转
class V3d_View : public Standard_Transient
{
public:
//! Initializes the view.
Standard_EXPORT V3d_View (const Handle(V3d_Viewer)& theViewer, const V3d_TypeOfView theType = V3d_ORTHOGRAPHIC);
//! Initializes the view by copying.
Standard_EXPORT V3d_View (const Handle(V3d_Viewer)& theViewer, const Handle(V3d_View)& theView);
//! Default destructor.
Standard_EXPORT virtual ~V3d_View();
//(此处是开源软件的代码)
一位刚踏上c艹学习道路的带学生