CheckBox in a Dialog and check if it checked or unchecked

Hey,

i have a button on a form if i hit the button a dialog will open.

How can ich Display a CheckBox and check with a if() if the box is checked or unchecked.

I want that WinApi::browseForFolderDialog('Speicher Ordner'); if the box is checked and show the savePath on the Dialog.

Thanks.