Visual C++ and MFC Programming 2nd Edition

Chapter 17: Track-Based Controls Visual C++ and MFC Fundamentals

The thumb of a slider can assume one of three shapes. By default, it appears as a

rectangular box. Alternatively, you can convert one of its shorter borders to appear as an

arrow. The shape of the thumb is controlled at design time by the Point property. Its

default value is Both, which gives it a rectangular shape. You can get this same shape by

omitting or adding the TBS_BOTH value.

For a horizontal slider, you can make the thumb’s arrow point to the left by changing the

Point property to Top/Left. If the slider were horizontal, this Point value would orient

the thumb arrow to the top:

To make the thumb of a dynamically created horizontal slider point up, add the

TBS_TOP. If the slider is vertical, to point its thumb to the left, add the TBS_LEFT

style to it.

If you want the thumb to point down for a horizontal slider, set the Point property to

Bottom/Right. This same value would make the thumb of a vertical slider point n the

right direction:

To point the thumb up for a horizontal slider you are programmatically creating, add the

TBS_BOTTOM. For the thumb of a vertical slider to point right, add the TBS_RIGHT

to it.

If you want to guide the user with some ticks on the control, at design time, set the Tick

Marks property to True. If you are dynamically creating the slider and you want it to

display ticks, simply adding the either the TBS_VERT or the TBS_HORZ style equips