help with "details" or "more info" buttons

Question

how do u make a button that expands the form to reveal more details about maybe an error and then when clicked on again shrinks the form back to it's original size. these buttons normally have arrows on them showing which the direction the form expands to when the button is clicked on.

Andrzej Wegierski · Answer

Check button Name property in Click event. If it is More info - expand the form size. If it is Close details - shrink it. Next change button Name. To display arrows use ControlPaint class.