WTL自画按钮与文件对话框

//////////////WTL自画按钮/////////////////class CBmpEixtBtn : public CBitmapButtonImpl<CBmpEixtBtn>{public:DECLARE_WND_SUPERCLASS(_T("WTL_BmpBtn"), GetWndClassName())// added border style (auto3d_single)CBmpEixtBtn(DWORD dwExtendedStyle = BMPBTN_AUTOSIZE /*| BMPBTN_AUTO3D_SINGLE*/, HIMAGELIST hImageList = NULL) : CBitmapButtonImpl<CBmpEixtBtn>(dwExtendedStyle, hImageList){ }BEGIN_MSG_MAP(CBmpEixtBtn)CHAIN_MSG_MAP(CBitmapButtonImpl<CBmpEixtBtn>)END_MSG_MAP()// override of CBitmapButtonImpl DoPaint(). Adds fillrectvoid DoPaint(CDCHandle dc){// added by SoftGee to resolve image artifactsBITMAP bmp ;CBitmap bitmap ;bitmap.LoadBitmapW(IDB_BITMAP1) ;bitmap.GetBitmap(&bmp) ;//CPaintDC dc(this->m_hWnd) ; CDC dcImage ;dcImage.CreateCompatibleDC(dc.m_hDC) ;HBITMAP hBitmapOld = dcImage.SelectBitmap(bitmap.m_hBitmap) ;dc.StretchBlt(0,0, 80, 25, dcImage.m_hDC,0,0,bmp.bmWidth,bmp.bmHeight,SRCCOPY) ;bitmap.DeleteObject() ;dcImage.DeleteDC() ;// call ancestor DoPaint() methodCBitmapButtonImpl<CBmpEixtBtn>::DoPaint(dc);}};在OnInitDialog里面:CBmpEixtBtn m_exitBtn;m_exitBtn.SubclassWindow(GetDlgItem(IDC_BUTTON1));//////////////////WTL文件对话框///////////////////CEdit m_edit;m_edit.Attach(GetDlgItem(IDC_EDIT1));TCHAR szDir[MAX_PATH]; BROWSEINFO bi;ITEMIDLIST *pidl;bi.hwndOwner = this->m_hWnd;bi.pidlRoot = NULL;bi.pszDisplayName = szDir;bi.lpszTitle = L"请选择目录";bi.ulFlags = BIF_RETURNONLYFSDIRS;bi.lpfn = NULL;bi.lParam = 0;bi.iImage = 0;pidl = SHBrowseForFolder(&bi);if(pidl == NULL)return 0;if(!SHGetPathFromIDList(pidl, szDir))return 1;m_edit.SetWindowTextW(szDir);