Implementing Scrollbars: Step 1

Modify the window style specified in the InitInstance function so that the window can have scrollbars. You do this by adding the WS_VSCROLL and WS_HSCROLL styles, as shown in the following code:

   /* Create a main window for this application instance. */
   hWnd = CreateWindow (
                        TEXT("LEADWClass"),
                        TEXT("LEADTOOLS Sample Application"),  /* Window title */
                        WS_OVERLAPPEDWINDOW|WS_VSCROLL|WS_HSCROLL, /* Window style */
                        CW_USEDEFAULT, /* Default horizontal position */
                        CW_USEDEFAULT, /* Default vertical position */
                        rWndSize.right - rWndSize.left,  /* Window width */
                        rWndSize.bottom - rWndSize.top,  /* Window height */
                        NULL,   /* Overlapped windows have no parent */
                        NULL,   /* Use the window class menu */
                        hInstance,  /* This instance owns this window */
                        NULL    /* Pointer not needed */