The dialog control objects, which can be children of dialog boxes or dialog regions, are as follows:
check box
combination box (simple and dropdown)
dropdown list
entry field (single-line)
group box
list box
multiline entry field
push button
radio button
slider
spin button
static text
table (See Table Objects)
Each dialog control must have a dialog box or dialog region as its parent. The size and position of dialog controls are defined in dialog units. When you create dialog boxes, take care not to overlap dialog control objects.