继承Cstatic的mystatic类显示图片,怎么调用onpaint方法
我的mystatic类如下:
- C/C++ code
CMyStatic::CMyStatic(char *bmpPath) { //加载图片 strcpy(m_bmpPath,bmpPath); m_hbmp = (HBITMAP)LoadImage(NULL,"c:/BIN/res/Close.bmp",IMAGE_BITMAP,0,0,LR_LOADFROMFILE); m_curBmp.Attach(m_hbmp); if (NULL == m_curBmp.m_hObject) { MessageBox("加载图片失败!","加载失败!",MB_OK); } m_stcID = -1;}void CMyStatic::MyCreate(CRect &rect, CWnd *pWnd, int ID){ //这里创建一个CStatic窗体 CStatic::Create(NULL,WS_CHILD|WS_VISIBLE|SS_BITMAP|SS_NOTIFY,rect,pWnd,ID); if (m_hWnd == NULL) { MessageBox("静态文本窗体创建不成功!","创建失败",MB_OK); return; }} void CMyStatic::OnPaint(){ CPaintDC dc(this); // device context for painting CRect curRect; GetClientRect(curRect); CDC memDC; memDC.CreateCompatibleDC(NULL); memDC.SelectObject(&m_curBmp); dc.BitBlt(0,0,curRect.Width(),curRect.Height(),&memDC,0,0,SRCCOPY); // TODO: Add your message handler code here // Do not call CStatic::OnPaint() for painting messages}
然后我在dialog的OK按钮电击事件中写了如下调用:
CRect rect(0, 0, 20, 20);
MyStatic m_mystatic("ddd");
m_mystatic.MyCreate(rect, this, 1);
但是运行程序后,点击按钮不能显示图片,是怎么回事啊?
[解决办法]
没仔细看,起码这个就不对:
,"c:/BIN/res/Close.bmp",
改成:
,"c:\\BIN\\res\\Close.bmp",
[解决办法]
CRect rect(0, 0, 20, 20);
MyStatic *pM_mystatic = new MyStatic ("ddd");
pM_mystatic->MyCreate(rect, this, 1);
[解决办法]
消息映射上了么?
BEGIN_MESSAGE_MAP(CRFPipeLine, CStatic)
//{{AFX_MSG_MAP(CFlowCtrl)
ON_WM_PAINT()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
[解决办法]
你Debug下调试一下看看
[解决办法]
加载图片是不是不能写在构造函数里面?
[解决办法]
顶2楼
你应该将MyStatic的对像做为类的成员变量
或在OnOk函数中new出来
你声明的变量是在栈中,OnOk函数结束,MyStatic就被析构了
[解决办法]
[解决办法]
Debug下调试一下