'OnW1' : is not a member of 'CMfctestView'怎么改

'OnW1' : is not a member of 'CMfctestView' 后提示到 c:\c\mfctest\mfctestview.h(13) : see declaration of 'CMfctestView' 部分程序 CMfctestView::CMfctestView()

{
    w=1;        //初始线宽默认为1
    shape=0;
}

void CMfctestView::OnW1() { w=1; //令线宽为1 } void CMfctestView::OnW2() { w=2; //令线宽为2 }

1.-=-----------

class CMfctestView : public CView
{
public:
    // ...
    void OnW1();
    void OnW2();
    // ...
};

2-------------------

#include "MfctestView.h"

// ...

void CMfctestView::OnW1()
{
    w = 1;
}

void CMfctestView::OnW2()
{
    w = 2;
}