获取给定路径的图标，演示SHGetFileInfo用法

获取给定路径的图标，演示SHGetFileInfo用法

基于上次那个SHBrowseForFolder用法的演示代码

建立的仍然是Win32 命令行的工程，所以入口点为main(),需要手动获取HINSTANCE结构。程序在WINXP+VS2005测试通过

/********************************************************************
  created:  2008/05/02
  created:  2:5:2008   3:40

            main.cpp
  author:    Gohan
  purpose:  演示SHBrowseForFolder用法
            演示SHGetFileInfo获取路径图标   
            演示Picture Box在SDK里的使用方法

*********************************************************************/
#include   <Windows.h>
#include   <ShlObj.h>
#include   "resource.h"
HICON   g_icon ;
RECT   g_rect ;
TCHAR   g_path [ MAX_PATH ];
void   OnInitDlg ( HWND   hwnd )
{
    GetWindowRect ( GetDlgItem ( hwnd , IDC_ICON1 ), & g_rect );
    MapWindowPoints ( NULL , hwnd , ( LPPOINT ) & g_rect , 2);
    DestroyWindow ( GetDlgItem ( hwnd , IDC_ICON1 ));
    SetDlgItemText ( hwnd , IDC_PATH , g_path );
}
void   OnPaint ( HWND   hwnd )
{
    PAINTSTRUCT   ps ;
    HDC   hdc = BeginPaint ( hwnd , & ps );
    DrawIcon ( hdc , g_rect . left , g_rect . left , g_icon );
    EndPaint ( hwnd ,& ps );
}
BOOL   CALLBACK   DlgProc ( HWND   hDlg , UINT   message ,
                            WPARAM   wParam , LPARAM   lParam )
{
    switch ( message )
    {
    case   WM_INITDIALOG :
        OnInitDlg ( hDlg );
        return   TRUE ;
    case   WM_PAINT :
        OnPaint ( hDlg );
        return   TRUE ;
    case   WM_COMMAND :
        switch ( LOWORD ( wParam ))
        {
        case   IDOK :
        case   IDCANCEL :
            EndDialog ( hDlg , 0) ;
            return   TRUE ;
        }
        break ;
    }
    return   FALSE ;
}
int   main ()
{
    HINSTANCE   hInstance = ( HINSTANCE ) GetModuleHandle ( NULL );
    BROWSEINFO   bi ;
    ZeroMemory (& bi , sizeof ( BROWSEINFO ));
    LPMALLOC   pMalloc ;
    LPITEMIDLIST   pidl = SHBrowseForFolder (& bi );
   
    if ( pidl != NULL )
    {
        SHGetPathFromIDList ( pidl , g_path );
        SHFILEINFO   sfi ;
        ZeroMemory (& sfi , sizeof ( SHFILEINFO ));
        SHGetFileInfo ( g_path ,0,& sfi , sizeof ( SHFILEINFO ), SHGFI_ICON );
        g_icon = sfi . hIcon ;
        DialogBox ( hInstance , MAKEINTRESOURCE ( IDD_DIALOG1 ), 0, DlgProc ) ;
        //MessageBox(NULL,path,TEXT("Choose"),MB_OK);
        if ( SUCCEEDED ( SHGetMalloc (& pMalloc )))
        {
            pMalloc -> Free ( pidl );
            pMalloc -> Release ();
        }
    }
    else
    {
        MessageBox ( NULL , TEXT ( " ), TEXT ( "Choose" ), MB_OK );
    }
}
/************************************************************************/
/* resource.h                                                           */
/************************************************************************/
#define IDD_DIALOG1                     101
#define IDC_PATH                        1001
#define IDC_ICON1                       1002
/************************************************************************/
/* demo.rc Microsoft Visual C++ generated resource script.              */
/************************************************************************/
#include "resource.h"
#include "afxres.h"
/////////////////////////////////////////////////////////////////////////////
//
// Dialog
//

IDD_DIALOG1 DIALOGEX 0, 0, 126, 83
STYLE DS_SETFONT | DS_MODALFRAME | DS_FIXEDSYS | DS_CENTER | WS_POPUP
FONT 8, "MS Shell Dlg", 400, 0, 0x1
BEGIN
    DEFPUSHBUTTON   "确定",IDOK,69,7,50,14
    PUSHBUTTON      "取消",IDCANCEL,69,24,50,14
    CONTROL         "",IDC_ICON1,"Static",SS_WHITEFRAME | SS_REALSIZEIMAGE,13,10,20,20,WS_EX_TRANSPARENT
    LTEXT           "静态",IDC_PATH,14,44,89,21,0,WS_EX_CLIENTEDGE
END


/////////////////////////////////////////////////////////////////////////////