GetWindowModuleFileName出错,返回空串

[xmyjd]

这是一个在DLL里的SHELL HOOK,监视2个消息(HSHELL_WINDOWACTIVATED和HSHELL_LANGUAGE),得到新窗口的程序路径和新窗口输入法的名字.
但是temp和lang的新值都完全没有改变,仍然是temp和lang.

LRESULT CALLBACK shellhookproc(int nCode, WPARAM wParam, LPARAM lParam)
{
	wfstream ofile;                     
	LPTSTR temp=_T("temp");
	LPTSTR lang=_T("lang");
	DWORD proid;
	switch (nCode)
	{
	case HSHELL_WINDOWACTIVATED:
		ofile.open("d:/out.txt",ios::app);
		GetWindowModuleFileName(NULL,temp,255);
		proid = GetWindowThreadProcessId(hWnd,&proid);
		ImmGetDescription(GetKeyboardLayout(proid),lang,255);
		ofile<<"HSHELL_WINDOWACTIVATED\t"<<temp<<"\t"<<lang<<endl;
		ofile.flush();	 
		ofile.close(); 
		break;
	case HSHELL_LANGUAGE:
		ofile.open("d:/out.txt",ios::app);
		GetWindowModuleFileName(NULL,temp,255);
		proid = GetWindowThreadProcessId(hWnd,&proid);
		ImmGetDescription(GetKeyboardLayout(proid),lang,255);
		ofile<<"HSHELL_LANGUAGE\t"<<temp<<"\t"<<lang<<endl;
		ofile.flush();	
		ofile.close();
		break;
	default:
		break;
	}
	return CallNextHookEx(shellhook, nCode, wParam, lParam);
}

[xmyjd]

自己顶自己顶自己顶自己顶

[贪玩的老鼠]

case HSHELL_WINDOWACTIVATED: HWND h=(HWND)wParam; ofile.open("d:/out.txt",ios::app); GetWindowModuleFileName(h,temp,255);

[Yofoo]

LPTSTR temp=_T("temp"); GetWindowModuleFileName(NULL,temp,255); windows或C下这样不行把, 你的是ios?, ios不懂