我正在开发一些Windows Embedded Compact 7的窗体应用程序,使用.net compact framework和c#智能设备项目类型来模拟桌面Shell。我使用SHGetFileInfo
WinAPI函数从exe文件中获取关联图标,以下是我的代码:
[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;
}
这段代码在Windows 7 Ultimate上运行良好(当然要使用shell32.dll而不是coredll.dll),但是当我尝试在Windows嵌入式或智能设备模拟器上运行此代码时,我会在这一行遇到无法解释的异常:Icon.FromHandle(shinfo.hIcon)
。有人知道如何解决我的问题吗?