怎样提取一个exe文件中存放的图标?

Question

用SHGetFileInfo,下面是一个完整的例子. using System;
using System.Runtime.InteropServices;
using System.Drawing;
namespace WindowsAppTmp
{
public class ExtractIcon
{
[DllImport("Shell32.dll")]
private static extern int  SHGetFileInfo
(
string pszPath,
uint dwFileAttributes,
out SHFILEINFO psfi,
uint cbfileInfo,
SHGFI uFlags
); [StructLayout(LayoutKind.Sequential)]
private struct SHFILEINFO
{
public SHFILEINFO(bool b)
{
hIcon=IntPtr.Zero;iIcon=0;dwAttributes=0;szDisplayName="";szTypeName="";
}
public IntPtr hIcon;
public int iIcon;
public uint dwAttributes;
[MarshalAs(UnmanagedType.LPStr, SizeConst=260)]
public string szDisplayName;
[MarshalAs(UnmanagedType.LPStr, SizeConst=80)]
public string szTypeName;
}; private ExtractIcon()
{
} private enum SHGFI
{
SmallIcon   = 0x00000001,
LargeIcon   = 0x00000000,
Icon    = 0x00000100,
DisplayName   = 0x00000200,
Typename   = 0x00000400,
SysIconIndex  = 0x00004000,
UseFileAttributes = 0x00000010
}
public static Icon GetIcon(string strPath, bool bSmall)
{
SHFILEINFO info = new SHFILEINFO(true);
int cbFileInfo = Marshal.SizeOf(info);
SHGFI flags;
if (bSmall)
flags = SHGFI.Icon|SHGFI.SmallIcon|SHGFI.UseFileAttributes;
else
flags = SHGFI.Icon|SHGFI.LargeIcon|SHGFI.UseFileAttributes; SHGetFileInfo(strPath, 256, out info,(uint)cbFileInfo, flags);
return Icon.FromHandle(info.hIcon);
}
}
}