一个手写的MFC程序,四个基本类,编译没有错,运行时有断言错误,忽略可以正常运行。但希望能解决
#include <afxwin.h>
#include <afxext.h>
#include "resource.h"
class MyFrameWnd : public CFrameWnd
{
DECLARE_DYNCREATE(MyFrameWnd)
public :
MyFrameWnd()
{
// Create(0,"ddd");
}
};
IMPLEMENT_DYNCREATE(MyFrameWnd,CFrameWnd)
class mydoc : public CDocument
{
DECLARE_DYNCREATE(mydoc)
public :
CString s;
CPoint point;
mydoc()
{
s="Welcome to SDI";
point.x=250;
point.y=100;
}
//BOOL OnNewDocument()
//{
// return TRUE;
//}
};
IMPLEMENT_DYNCREATE(mydoc,CDocument)
class myview : public CView
{
DECLARE_DYNCREATE(myview)
public :
void OnDraw(CDC *d)
{
mydoc *b;
b=(mydoc *)m_pDocument;
d->SetTextColor(RGB(0,0,255));
d->TextOut(b->point.x,b->point.y,b->s);
}
void OnLButtonDown(UINT i,CPoint p)
{
mydoc *b;
b=(mydoc *)m_pDocument;
b->point.x=p.x;
b->point.y=p.y;
Invalidate();
}
int OnCreate(LPCREATESTRUCT lpCreateStruct)
{
// ::AfxMessageBox("OnCreate");
return TRUE;
}
DECLARE_MESSAGE_MAP()
};
IMPLEMENT_DYNCREATE(myview,CView)
BEGIN_MESSAGE_MAP(myview,CView)
//ON_WM_CREATE()
ON_WM_LBUTTONDOWN()
END_MESSAGE_MAP()
class myApp : public CWinApp
{
public :
int InitInstance()
{
CSingleDocTemplate *y;
CRuntimeClass *w,*d,*v;
//d=((CRuntimeClass*)(&mydoc::classmydoc));
d=RUNTIME_CLASS(mydoc);
w=RUNTIME_CLASS(MyFrameWnd);
v=RUNTIME_CLASS(myview);
y=new CSingleDocTemplate(IDR_MENU1,d,w,v);
AddDocTemplate(y);
OnFileNew();
return 1;
}
};
myApp a;
*******************************************************
错误指向docsingl.cpp的215行
VERIFY(strDocName.LoadString(AFX_IDS_UNTITLED));
我想是标题字符串为空,但不知道如何加?