How can I get the CWnd pointer from HANDLE hProcess

[caykahve]

Hi, After using ShellExecuteEx and getting HANDLE hProcess of the SHELLEXECUTEINFO Structure, I need to get the CWnd pointer of the program window I opened. I want to use it in SetWindowPos to move and set its size. How can I get CWnd *? Thanks, caykahve

[Jose Lamas Rios]

You don't actually need a CWnd*. CWnd will just wrap the handle and convert the calls you make to CWnd methods in calls to the corresponding API function using the handle stored in its m_hWnd member. For example, here is the implementation for CWnd::MoveWindow()

void CWnd::MoveWindow(int x, int y, int nWidth, int nHeight, BOOL bRepaint)
{
  ASSERT(::IsWindow(m_hWnd));
  ::MoveWindow(m_hWnd, x, y, nWidth, nHeight, bRepaint);
}

So, you can always make the call to the API function yourself. That being said, you can obtain a CWnd* for a given handle, using CWnd::FromHandle() but take note that in your case it will be a pointer to a temporary object, so you can't store it for later use. Again, if all you want to do is to use some CWnd methods, you can use the corresponding API function directly on the window handle. For CWnd::SetWindowPos, the corresponding API is just ::SetWindowPos. Look in the documentation to see what parameters it expects. -- jlr http://jlamas.blogspot.com/[^]

[ThatsAlok]

caykahve wrote: , I need to get the CWnd pointer of the program window I opened. There is no direct Method for getting Window Handle from the process ID, but this link may help:- Is it possible to get info between HWND and Process handle?[^]

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers, Alok Gupta VC Forum Q&A :- I/ IV

[Eytukan]

:cool:.. this is another way to say Hi!! to u . but this is the only way now ..he he V

[Jose Lamas Rios]

Holy handles, Batman! After reading Alok's response I now realize that you were talking about a process handle and I took it as a window handle. It's embarrasing considering how clear it is in the thread title itself :) No cookies but more coffe for me. Sorry, -- jlr http://jlamas.blogspot.com/[^]

[ThatsAlok]

Jose Lamas Rios wrote: No cookies but more coffe for me. Sir, Then please pass that Cookie to me, I am Hungry at this moment :).

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers, Alok Gupta VC Forum Q&A :- I/ IV