Using a Dialog Box - QB64Official/qb64 GitHub Wiki
QB64 displays dialog boxes when you choose commands that have options.
Select a text box for input.
With a mouse...
Move the mouse pointer to the text box, then press and release ("click") the mouse button.
With a keyboard...
Press Tab until the cursor is in the text box.
Choose an item from a list box.
With a mouse...
Double-click the item.
With a keyboard...
Highlight the item by pressing the direction keys, then press Enter.
Choose an option.
With a mouse...
Click the option.
With a keyboard...
Move to an option with the direction keys.
Turn a check box on or off.
With a mouse...
Click the check box.
With a keyboard...
Use Tab to move the cursor to the check box, then press the Spacebar.
Choose a command button.
With a mouse...
Click the command button.
With a keyboard...
Use Tab to move the cursor to the command button, then press Enter.