怎么在已经写好的mfc程序中增加一个按钮功能？

在Test.cpp中添加如下代码：

[cpp] view plain copy print?

CString CTestDlg::brow(LPCTSTR filter)

{

OPENFILENAME ofn

TCHAR szFilename[512]=_T("")

ZeroMemory(&ofn, sizeof(OPENFILENAME))

ofn.lStructSize = sizeof(OPENFILENAME)

ofn.hwndOwner = ::AfxGetMainWnd()->m_hWnd

ofn.lpstrFile = szFilename

ofn.nMaxFile = sizeof(szFilename)

ofn.lpstrFilter = filter

ofn.nFilterIndex = 1

ofn.lpstrFileTitle = NULL

ofn.nMaxFileTitle = 0

ofn.lpstrInitialDir = NULL

ofn.lpstrDefExt=NULL

ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST | OFN_HIDEREADONLY

GetOpenFileName(&ofn)

if(lstrlen(ofn.lpstrFile)>0)

{

return ofn.lpstrFile

}

return _T("")

}

[cpp] view plain copy print?

void CTestDlg::OnClickedButton1()

{

// TODO: 在此添加控件通知处理程序代码

UpdateData(TRUE)

m_File=brow(_T("所有文件(*.*)|*.*\0\0"))

UpdateData(false)

}

[cpp] view plain copy print?

在TestDlg.h添加如下代码：

[cpp] view plain copy print?

CString brow(LPCTSTR filter)

采用可视化界面添加的BUTTON按钮的话，一般来说双击该控件就可以添加时间响应函数，如果双击不管用，还可以右键该控件选择 add event handler就会进入添加响应函数的编辑框，选择响应的消息响应函数。

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