The FXSwitcher widget manages children that are positioned on top of each other. FXSwitcher allows you to select which child should be shown by either sending it a message or calling its setCurrent method. When sending a message, you must set the message ID to FXSwitcher.ID_OPEN_FIRST for the first child. You must then increment the message ID from that value for the subsequent children, as shown in the following example. For more information on messages, see “Targets and messages,” Section 6.5.4. To use the setCurrent method, you should provide the zero-based index of the child that you want to display. For example, to display the first child, you should call the setCurrent method with an index value of zero.

For example,

sw = FXSwitcher(parent)
FXRadioButton(hf, 'Option 1', sw, FXSwitcher.ID_OPEN_FIRST)
FXRadioButton(hf, 'Option 2', sw, FXSwitcher.ID_OPEN_FIRST+1)
hf1 = FXHorizontalFrame(sw)     
FXButton(hf1, 'Button 1')
FXButton(hf1, 'Button 2')
hf2 = FXHorizontalFrame(sw)
FXButton(hf2, 'Button 3')
FXButton(hf2, 'Button 4')