Button

  Buttons are the most used control-elements in GRAPE. They are used for switching between the menus, starting actions and several other things. They can be selected (pressed) with the left mouse button. Inactive buttons cannot be selected (see figure 4.2).

  
Figure 4.2: Buttons: normal, pressed, inactive

There are some special types of buttons:

Cycle-button:

Looking like an ordinary button, this kind of button changes its label every time the button is clicked. Therefore it offers to pick out one out of several options.

ComboButton:

Serving the same purpose as a Cycle-button, ComboButtons show all possible selections in a list when the left mouse is hold down. An entry is selected by releasing the mouse-button.

Checkbox:

Checkboxes turn switches on or off (see figure 4.3).

  
Figure 4.3: Checkboxes: not pressed, pressed