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最新推荐文章于 2023-11-20 09:19:30 发布

原创最新推荐文章于 2023-11-20 09:19:30 发布 · 2.2k 阅读

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#file #button #class #include #null

本文展示了一个使用Microsoft Foundation Classes (MFC) 创建简单按钮并处理其点击事件的示例。该示例代码中定义了一个窗口类Cbutton3Window，其中包含一个按钮，当调整窗口大小或点击按钮时，会触发相应的消息处理函数。

#include <afxwin.h>
#define IDB_BUTTON 100
class Cbutton3App:public CWinApp
{
public:
virtual BOOL InitInstance();
};
Cbutton3App button3App;
class Cbutton3Window:public CFrameWnd
{
CButton* button;
public:
Cbutton3Window();
afx_msg void HandleButton();
afx_msg void OnSize(UINT ,int ,int );
DECLARE_MESSAGE_MAP()
};
void Cbutton3Window::HandleButton()
{
MessageBeep(-1);
}
void Cbutton3Window::OnSize(UINT nType,int cx,int cy)
{
CRect r;
GetClientRect(&r);
r.InflateRect(-20,-20);
button->MoveWindow(r);
}
BEGIN_MESSAGE_MAP(Cbutton3Window,CFrameWnd)
ON_BN_CLICKED(IDB_BUTTON,HandleButton)
ON_WM_SIZE()
END_MESSAGE_MAP()
BOOL Cbutton3App::InitInstance()
{
m_pMainWnd=new Cbutton3Window();
m_pMainWnd->ShowWindow(m_nCmdShow);
m_pMainWnd->UpdateWindow();
return true;
}
class Cbutton3Window::Cbutton3Window()
{
CRect r;
Create(NULL,"Cbutton test",WS_OVERLAPPEDWINDOW,CRect(0,0,200,200);
GetClientRect(&r);
r.InflateRect(-20,-20);
button=new CButton();
button->Create("Push me",WS_CHILD|WS_VISIBLE|BS_PUSHBUTTON,r,this,IDB_BUTTON);