The ExtractIcon function retrieves a handle to an icon from the specified executable file, dynamic-link library (DLL), or icon file. To retrieve an array of handles to large or small icons, use the ExtractIconEx function. HICON ExtractIcon( HINSTANCE hInst, // instance handle LPCTSTR lpszExeFileName, // filename of file with icon UINT nIconIndex // index of icon to extract );
HINSTANCE hInst, // instance handle
LPCTSTR lpszExeFileName, // filename of file with icon
UINT nIconIndex // index of icon to extract
);
LPCTSTR 和LPTSTR 区别在哪
我急啊
或者给个ExtractAssociatedIcon()例子
CFileDialog fileDialog( TRUE,"*.ICO",NULL,NULL,"资源文件(*.ICO,*.BMP,*.EXE,*.DLL,*.ICL)|*.ICO;*.BMP;*.EXE;*.DLL;*.ICL||");
if (fileDialog.DoModal() == IDOK)
{
szOpenFileName=fileDialog.GetPathName();
szOpenFileExtName= fileDialog.GetFileExt ();
szOpenFileExtName.MakeLower (); m_List.ResetContent (); //选清空左侧图标列表框 //读取并显示ICON文件
if(szOpenFileExtName =="ico")
{
lpIR=pIcons->ReadIconFromICOFile (szOpenFileName);
HICON hIcon;
hIcon=ExtractIcon(AfxGetInstanceHandle(),szOpenFileName,0);
if(hIcon!=NULL)
m_List.AddString (szOpenFileName);
CStatic* pStatic = (CStatic*) GetDlgItem(IDC_ICONS);
pStatic->SetIcon (hIcon);
}
else if(szOpenFileExtName == "bmp") //读取并显示BMP文件
{
pIcons->IconImageFromBMPFile (szOpenFileName,&lpIR->IconImages[0],TRUE);
HICON hIcon;
hIcon=pIcons->MakeIconFromResource (&lpIR->IconImages [0]);
if(hIcon!=NULL)
m_List.AddString (szOpenFileName);
CStatic* pStatic = (CStatic*) GetDlgItem(IDC_ICONS);
pStatic->SetIcon (hIcon);
}
else //读取并显示EXE、DLL等资源文件
{
HINSTANCE hLibrary; // Load the DLL/EXE - NOTE: must be a 32bit EXE/DLL for this to work
if( (hLibrary = LoadLibraryEx( szOpenFileName, NULL, LOAD_LIBRARY_AS_DATAFILE )) == NULL )
{
// Failed to load - abort
MessageBox( szOpenFileName+ "文件载入错误,必须是WIN32的文件!", "错误", MB_OK );
return;
}
// Store the info
EDII.szFileName =szOpenFileName;
EDII.hInstance = hLibrary;
// Fill in the listbox with the icons available
if( ! EnumResourceNames( EDII.hInstance, RT_GROUP_ICON, (ENUMRESNAMEPROC )MyEnumProcedure, (LPARAM)GetSafeHwnd()) )
{
MessageBox( "列举图标资源名时出错!", "错误", MB_OK );
return;
}
} m_List.SetCurSel (0);
if( m_List.GetCount() == 0 )
{
MessageBox( "此文件中没有图标资源!", "错误", MB_OK );
//无图标资源,置保存和复制按钮为无效状态
m_Copy.EnableWindow (false);
m_SaveAs.EnableWindow (false);
return;
}
//有图标资源,置保存和复制按钮为有效状态
m_Copy.EnableWindow (true);
m_SaveAs.EnableWindow (true); //刷新调用OnPaint来显示图标
InvalidateRect(NULL,TRUE);
} 如何将提取出的图标资源保存为Ico或Bmp格式。
//保存图标资源为ICO或BMP格式文件
void CIconSnapDlg::OnButtonSaveas()
{
LPTSTR lpIconID; CFileDialog fileDialog( FALSE,"*.ICO",NULL,NULL,"图标文件(*.ICO)|*.ICO|位图文件(*.BMP)|*.BMP||");
if (fileDialog.DoModal() == IDOK)
{
szSaveFileName=fileDialog.GetPathName();
szSaveFileExtName= fileDialog.GetFileExt ();
szSaveFileExtName.MakeLower (); if(szOpenFileExtName=="exe"||szOpenFileExtName=="dll"||szOpenFileExtName=="icl")
if((lpIconID=(LPTSTR)m_List.GetItemData (m_List.GetCurSel()))!= (LPTSTR)LB_ERR)
lpIR=pIcons->ReadIconFromEXEFile (szOpenFileName,lpIconID);
if(szSaveFileExtName=="bmp")
{
if(lpIR!=NULL && m_List.GetCount ()>0)
{
BeginWaitCursor();
pIcons->IconImageToBMPFile (szSaveFileName,&lpIR->IconImages [0]);
EndWaitCursor();
}
else
MessageBox( "没有可保存的图标资源!", "错误", MB_OK );
}
else if(szSaveFileExtName=="ico")
{
if(lpIR!=NULL && m_List.GetCount ()>0)
{
BeginWaitCursor();
pIcons->WriteIconToICOFile (lpIR,szSaveFileName);
EndWaitCursor();
}
else
MessageBox( "没有可保存的图标资源!", "错误", MB_OK );
}
}
}