TRadioButtons get selected

[jordiperezartigues]

I am adding a radio button to the dialog:

control = new TRadioButtons(r, new TSItem(radio1, new TSItem(radio2, NULL)));
control->press(input_id);
dlg.insert(control);

once dialog is executed, how do i obtain the radio ithem checked?

[magiblot]

Firstly, you need to keep a pointer to the TRadioButtons object. Then, to get the currently selected item, you can use getData() passing a pointer to an unsigned short as parameter:

ushort selectedItemNum;
radioButtons->getData(&selectedItemNum);
// 'selectedItemNum' is now either the selected item number or 0 if no item is selected.

Otherwise, you can check whether a specific item is selected using the mark() function:

if (radioButtons->mark(1))
{
    // First item selected...
}
else if (radioButtons->mark(2))
{
    // Second item selected...
}

Turbo Vision was originally designed so that you could call getData() directly on the dialog object, which would then call getData() for each of its subviews. For example:

tvision/examples/tvdemo/tvdemo3.cpp

Lines 51 to 59 in 85aaeca

	// 'mouseReverse' will be received by the checkbox inserted into
	// 'TMouseDialog'. 'TCheckBoxes' takes a pointer to a 'ushort' in
	// 'getData'/'setData'.
	ushort mouseReverse = (ushort) TEventQueue::mouseReverse;
	mouseCage->helpCtx = hcOMMouseDBox;
	mouseCage->setData(&mouseReverse);
	if (deskTop->execView(mouseCage) != cmCancel)
	mouseCage->getData(&mouseReverse);
	TEventQueue::mouseReverse = Boolean( mouseReverse );

The tvforms example is also based on this concept.

But I strongly advise against doing that because it is very easy to mess up and run into memory safety issues.