我需要从EXE中提取所有图标并将它们保存为磁盘文件,但我无法使用最简单的解决方案(ExtractIconEx),因为我需要以某种方式提取ICO文件即使代码在运行Windows XP的系统上运行,也可以保留大尺寸图标。我将在稍后使用其他代码提取想要的图标(128x128和其他vista大小的图标),但我需要一种方式来提取所有图标及其所有资源,因为它们出现在EXE中,而不管PC代码是否运行正在运行XP,Vista或Win7。从EXE中提取所有图标而不使用ExtractIconEx
到目前为止,我知道图标在RT_GROUP_ICONS。
我知道有些人在Delphi中一定是做过这个,因为像IcoFX和资源管理器这样的工具似乎已经做到了。我曾经记得看到一个完全开源的Delphi工具,可以做到这一点,但那是几年前。
要重申我用ExtractIconEx所遇到的问题 - 它不会访问整个.ico文件,它只会提取支持的图标资源格式,这是平台支持的任何单个分辨率(大小)。因此,在XP上,它将提取32x32或48x48图标,但不是Vista格式的128x128图标。
更新:这是公认的答案,解决了我的面向未来的忧虑的修改版本。如果我们所调用的函数在未来的Windows版本中从User32.dll中消失,我希望它会更优雅地失败,而不是加载我的整个应用程序。
unit ExtractIconUtils;
interface
uses Graphics,Forms,Windows;
//----------------------------------------------------------------------------
// ExtractIcons
// Call "private" MS Api to extract Icon file. This calls a publically
// documented function marked as deprecated in the MSDN documentation.
// It was no doubt Not Originally Intended to be documented, or publically
// accessed, but it provides functionality that its hard to live without.
// It exists on Windows 2000, XP, Vista, and Windows7, but might not exist
// in some future Windows version (released after year 2011).
//
// uses global hUserDll : THandle;
//----------------------------------------------------------------------------
function ExtractIcons(exeFilename,icoOutFileName:String;icoSize:Integer):Boolean;
var
hUserDll : THandle;
implementation
function ExtractIcons(exeFilename,icoOutFileName:String;icoSize:Integer):Boolean;
const
{$ifdef UNICODE}
ExtractProcName='PrivateExtractIconsW';
{$else}
ExtractProcName='PrivateExtractIconsA';
{$endif}
type
TExtractFunc = function(lpszFile: PChar; nIconIndex, cxIcon, cyIcon: integer; phicon: PHANDLE; piconid: PDWORD; nicon, flags: DWORD): DWORD; stdcall;
var
hIcon : THandle;
nIconId : DWORD;
Icon : TIcon;
PrivateExtractIcons:TExtractFunc;
begin
result := false;
if (hUserDll<4) then begin
hUserDll := LoadLibrary('user32.dll');
if (hUserDll<4) then exit;
end;
{ PrivateExtractIcons:
MSDN documentation says that this function could go away in a future windows
version, so we must try to load it, and if it fails, return false, rather than
doing a static DLL import.
}
PrivateExtractIcons := GetProcAddress(hUserDll, ExtractProcName);
if not Assigned(PrivateExtractIcons) then exit;
//extract a icoSize x icoSize icon where icoSize is one of 256,128,64,48,32,16
if PrivateExtractIcons (PWideChar(exeFilename),
0, icoSize, icoSize, @hIcon, @nIconId, 1, LR_LOADFROMFILE) <>0 then
try
Icon:=TIcon.Create;
try
Icon.Handle:=hIcon;
Icon.SaveToFile(icoOutFileName);
result := true;
finally
Icon.Free;
end;
finally
DestroyIcon (hIcon);
end;
end ;
initialization
// none
finalization
if (hUserDll>4) then
FreeLibrary(hUserDll);
end.
Vista图标是256px PNG图像,而不是128px,FWIW – 2011-05-10 19:28:56
你试过'PrivateExtractIcons'功能吗? http://msdn.microsoft.com/en-us/library/ms648075 – RRUZ 2011-05-10 19:33:55
这是一个功能性的工作理念,但它让我感到恐慌,它将在未来破裂(感谢MSDN!) – 2011-05-10 20:51:05