Return the current state of a window
long PtWindowGetState( PtWidget_t *widget )
This function returns the current state of the window pointed to by
the widget variable:
| State | 
Description
    | 
| Ph_WM_STATE_ISHIDDEN | 
The window is hidden.
    | 
| Ph_WM_STATE_ISMAX | 
The window is maximized.
    | 
| Ph_WM_STATE_ISBACKDROP | 
The window is a backdrop. 
    | 
| Ph_WM_STATE_ISTASKBAR | 
The window is a taskbar.
    | 
| Ph_WM_STATE_ISICONIFIED | 
The window is iconified.
    | 
| Ph_WM_STATE_ISFRONT | 
The window is the frontmost in the family.
    | 
| Ph_WM_STATE_ISFOCUS | 
The window has focus. | 
The current state of the window, or -1
if the widget isn't a PtWindow or 
wasn't realized.
Photon
| Safety: |  | 
| Interrupt handler | 
    No | 
| Signal handler | 
    No | 
| Thread | 
    No |