delphi - 使用delphi从PID获取完整路径

Question

我需要从 PID 获取完整路径。

我已经检查过这个问题C++ Windows - How to get process path from its PID我编写了以下代码:

 function GetFullPathFromPID(PID: DWORD): string;
 var
    hProcess: THandle;
    ModName : Array[0..MAX_PATH + 1] of Char;
 begin
   Result:='';
    hProcess := OpenProcess(PROCESS_ALL_ACCESS,False, PID);
    try
      if hProcess <> 0 then
       if GetModuleFileName(hProcess, ModName, Sizeof(ModName))<>0 then
         Result:=ModName
        else
         ShowMessage(SysErrorMessage(GetLastError));
    finally
     CloseHandle(hProcess);
    end;
 end;

但始终返回此消息:

the specified module could not be found

如何从 PID 获取完整路径？

Answer 1

您需要使用GetModuleFileNameEx功能。来自 MSDN:

GetModuleFileName Function

Retrieves the fully-qualified path for the file that contains the specified module. The module must have been loaded by the current process.

To locate the file for a module that was loaded by another process, use the GetModuleFileNameEx function.

示例用法(使用 PsAPI):

function GetPathFromPID(const PID: cardinal): string;
var
  hProcess: THandle;
  path: array[0..MAX_PATH - 1] of char;
begin
  hProcess := OpenProcess(PROCESS_QUERY_INFORMATION or PROCESS_VM_READ, false, PID);
  if hProcess <> 0 then
    try
      if GetModuleFileNameEx(hProcess, 0, path, MAX_PATH) = 0 then
        RaiseLastOSError;
      result := path;
    finally
      CloseHandle(hProcess)
    end
  else
    RaiseLastOSError;
end;