自定义消息块 ON_COMMAND_RANGE,ON_UPDATE_COMMAND_UI_RANGE

class CSomeView:public CView

{

protected:

afx_msg void OnCommandRange(UINT nID);

afx_msg void OnUpdateCommandUIRange(CCmdUI* pCmdUI);

int m_iShape //记录选择了哪个选项

DECLARE_MESSAGE_MAP();

}

BEGIN_MESSAGE_MAP(CSomeView,CView)

ON_COMMAND_RANGE( idFirst, idLast,OnCOmmandRange);

ON_UPDATE_COMMAND_UI_RANGE(idFirst,idLast,OnUpdateCommandUIRange)

END_MESSAGE_MAP()

宏的参数没有类型,是用#define 定义的量

void CMsdrawView::OnDrawShape(UINT nID)
{
m_iShape=nID-ID_DRAW_STROKE+1;
}

void CMsdrawView::OnUpdateDrawShape(CCmdUI *pCmdUI)
{
pCmdUI->SetCheck (m_iShape+ID_DRAW_STROKE-1==pCmdUI->m_nID ?1:0);
}