[游戏学习23] MFC 画尺子

>_<:这是个简单的MFC程序，有利于了解MFC的框架结构

>_<:Ruler.h

#include<afxwin.h>
class CMyApp:public CWinApp
{
public:
    virtual BOOL InitInstance();
};
class CMainWindow:public CFrameWnd
{
public:
    CMainWindow();
protected:
    afx_msg void OnPaint();
    DECLARE_MESSAGE_MAP();
};

>_<:Ruler.cpp

#include<afxwin.h>
#include"Ruler.h"
CMyApp myApp;
//////////////////////////////////////////////
//CMyApp member function
BOOL CMyApp::InitInstance()
{
    m_pMainWnd=new CMainWindow;
    m_pMainWnd->ShowWindow(m_nCmdShow);
    m_pMainWnd->UpdateWindow();
    return TRUE;
}
/////////////////////////////////////////////
//CMainWindow message map and member function
BEGIN_MESSAGE_MAP(CMainWindow,CFrameWnd)
    ON_WM_PAINT()
END_MESSAGE_MAP()

CMainWindow::CMainWindow()
{
    Create(NULL,_T("Ruler"),WS_OVERLAPPEDWINDOW|WS_HSCROLL|WS_VSCROLL);
}

void CMainWindow::OnPaint()
{
    CPaintDC dc(this);

    //屏幕初始化
    dc.SetMapMode(MM_LOENGLISH);//0.01in  ;1英寸映射
    dc.SetTextAlign(TA_CENTER|TA_BOTTOM);
    dc.SetBkMode(TRANSPARENT);

    //画尺子主题
    CBrush brush(RGB(255,255,0));
    CBrush* pOldBrush=dc.SelectObject(&brush);
    dc.Rectangle(100,-100,1300,-200);
    dc.SelectObject(pOldBrush);

    //画刻度
    for(int i=125;i<1300;i+=25){
        dc.MoveTo(i,-192);
        dc.LineTo(i,-200);
    }
    for(int i=150;i<1300;i+=50){
        dc.MoveTo(i,-184);
        dc.LineTo(i,-200);
    }
    for(int i=200;i<1300;i+=100){
        dc.MoveTo(i,-175);
        dc.LineTo(i,-200);

        CString string;
        string.Format(_T("%d"),(i/100)-1);
        dc.TextOutA(i,-175,string);
    }

    //商标
    
    //CRect rect(125,-125,175,-150);
    //CString string=_T("晨光");
    //dc.DrawText(string,&rect,DT_SINGLELINE|DT_CENTER|DT_VCENTER);
    dc.SetTextColor(RGB(192,192,192));
    dc.TextOutA(125,-125,"晨光");
}