Visual C++ and MFC Programming 2nd Edition

Chapter 12: Dialog-Based Windows Visual C++ and MFC Fundamentals

13.4.2..Control’s Location and Size Using Grids........................................

To help position the controls you are adding at design time, you can display some guiding

grid dots. To do this, you can click the Toggle Grid button. In this case, the control

can be positioned and resized anywhere in the area inside the borders of the parent

window, using the grids as guides, as seen on the above red rectangle. No control can be

positioned outside of the client area. The dots on this view control the location and

position of the control:

When you click the body of the parent, the top-left corner of the control would be

positioned on a dot and the dimensions (width and height) of the control would align with

the next dots on its right and bottom. To avoid this default behavior, before clicking the

body of the parent, press and hold Alt; then click and drag to draw a rectangle shape of