我正在为 Windows Embedded Compact 7 开发一些 Windows 窗体应用程序,该应用程序使用 .net compact 框架和 c# Smart Device 项目类型模拟桌面外壳。我使用SHGetFileInfo
WinAPI 函数从 exe 文件中获取关联的图标,下面是我的代码:
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
public struct SHFILEINFO
{
public IntPtr hIcon;
public IntPtr iIcon;
public uint dwAttributes;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 256)]
public string szDisplayName;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)]
public string szTypeName;
public SHFILEINFO(bool setDefaults)
{
hIcon = IntPtr.Zero;
iIcon = IntPtr.Zero;
dwAttributes = 0;
szDisplayName = "";
szTypeName = "";
}
}
public class Win32
{
public const uint SHGFI_ICON = 0x000000100;
public const uint SHGFI_LARGEICON = 0x00000000;
public const uint SHGFI_SMALLICON = 0x00000001;
[DllImport("coredll.dll")]
public static extern IntPtr SHGetFileInfo(string pszPath,
int dwFileAttributes,
ref SHFILEINFO psfi,
uint cbSizeFileInfo,
uint uFlags);
}
然后我从这里调用这个函数:
private static Icon ExtractIconFromExe(string targetPath)
{
IntPtr hImgLarge;
var shinfo = new SHFILEINFO();
hImgLarge = Win32.SHGetFileInfo(targetPath,
0,
ref shinfo,
(uint)Marshal.SizeOf(shinfo),
Win32.SHGFI_ICON);
var icon = Icon.FromHandle(shinfo.hIcon);
return icon;
}
它在我的 Windows 7 Ultimate 上运行良好(当然使用 shell32.dll 而不是 coredll.dll),但是当我尝试在 Windows Embedded 或 Smart Device 模拟器上运行此代码时,我在这一行中出现了无信息异常:Icon.FromHandle(shinfo.hIcon)
. 有人知道如何解决我的问题吗?