How i get windows media player handle?

[Cambalinho]

i have these function for get windows media player window handle:

void APIDoEvents()
{
    MSG msg;
    BOOL result;

    while ( ::PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE ) )
    {
        result = ::GetMessage(&msg, NULL, 0, 0);
        if (result == 0) // WM_QUIT
        {
            ::PostQuitMessage(msg.wParam);
            break;
        }
        else if (result == -1)
        {
             // Handle errors/exit application, etc.
        }
        else
        {
            ::TranslateMessage(&msg);
            ::DispatchMessage(&msg);
        }
    }
}
HWND WaitUntilWindowsMediaPlayerIsVisible(int Mode=0)
{
    HWND hwndWindow=NULL;
    while(true)
    {
        APIDoEvents();
        if(Mode==0)
        {
            if((FindWindow("WMPlayerApp",NULL)!=NULL  && IsWindowVisible(FindWindow("WMPlayerApp",NULL))==TRUE) || (FindWindow("WMP Skin Host",NULL)!=NULL && IsWindowVisible(FindWindow("WMP Skin Host",NULL))==TRUE))
            {
                hwndWindow=FindWindow("WMPlayerApp",NULL);
                if(hwndWindow==NULL)
                    hwndWindow=FindWindow("WMP Skin Host",NULL);
                break;
            }

        }
        else if(Mode==1)
        {
            if(FindWindow("WMP Skin Host",NULL)!=NULL && IsWindowVisible(FindWindow("WMP Skin Host",NULL))==TRUE && GetWindowTitle(FindWindow("WMP Skin Host",NULL))!="Windows Media")
            {
                hwndWindow=FindWindow("WMP Skin Host",NULL);
                break;
            }

        }
        else if(Mode==2)
        {
            if(FindWindow("WMPlayerApp",NULL)!=NULL  && IsWindowVisible(FindWindow("WMPlayerApp",NULL))==TRUE)
            {
                hwndWindow=FindWindow("WMPlayerApp",NULL);
                break;
            }
        }
    }
    return hwndWindow;
}

the 2nd time that i call these function, i get the handle correctly.
see the code:

int main()
{
    //get programs folder path:
    char programs[255+1];
    SHGetFolderPath(NULL,CSIDL_PROGRAM_FILESX86 ,NULL,SHGFP_TYPE_DEFAULT,programs);

    //Execute the Windows Media Player:
    string strFile2=(string)programs + "\\Windows Media Player\\wmplayer.exe";
    ShellExecute( NULL, "open",strFile2.c_str(),NULL, NULL,SW_SHOWNORMAL);

    //wait that windows media plaer is ready:
    WaitUntilWindowsMediaPlayerIsVisible();

    //changing to Library:
    inputPress(0X31,VK_CONTROL);

    //getting the windows media player window handle:
    HWND getwmpwindow=WaitUntilWindowsMediaPlayerIsVisible();
    ShowWindow(getwmpwindow,SW_SHOWMAXIMIZED);
    
    //select the tree view list:
    POINT cursorpos;
    GetCursorPos(&cursorpos);
    SetCursorPos(10,180);
    inputPress(VK_LBUTTON);
    SetCursorPos(cursorpos.x,cursorpos.y);
    inputPress(VK_RIGHT);
    inputPress(VK_RIGHT);
    
    //using tab to music list, on play list:
    inputPress(VK_TAB);
    inputPress(VK_TAB);

    //select the 1st music on list:
    inputPress(VK_DOWN);
    inputPress(VK_UP);

    //play the music:
    inputPress(VK_RETURN);
    inputPress(VK_RETURN);

    //going to skin:
    inputPress(0X32,VK_CONTROL);

    //change Windows Media Player position:
    getwmpwindow=WaitUntilWindowsMediaPlayerIsVisible(1);
    SetWindowPos(getwmpwindow, HWND_TOPMOST, 830,735,0,0,
                             SWP_NOCOPYBITS| SWP_NOSIZE);
    
    //getting music name:
    string text=GetWindowTitle(getwmpwindow);
    cout << text <<endl;
    return 0;
}

the window position is only changed when i Sleep() for some time.
my function it's great, but, by some reason, detect the library windows, instead skin window... why these strange 'error'?