An application sends a ZGM_GETGRIDWIDTH message to determine the width of the ZeeGrid client area in pixels.
ZGM_GETGRIDWIDTH wParam = 0; //not used; must be zero lParam = 0; //not used; must be zero
The width of the client area of the ZeeGrid in pixels.
The returned value is the width in pixels from the left client edge of the ZeeGrid data area to the right client edge if there is no vertical scrollbar. Otherwise, it is the distance to the left edge of the vertical scrollbar.