Checkboxes

CheckBox

How to set value using only the window handle of a checkbox

First you have to declare this constant

Number: BM_SETCHECK   = 0x00F1

The next piece of code checks the checkbox

Call SalSendMsg( hWndItem, BM_SETCHECK, TRUE, 0 )

UnChecking

Call SalSendMsg( hWndItem, BM_SETCHECK, FALSE, 0 )

How to set the checkbox text at the left

This also works for radiobuttons.
First you have to declare this constant

Number: BS_LEFTTEXT    = 0x00000020

The next piece of code sets the checkbox/radiobutton text at the left

Call VisWinSetStyle( hWndItem, BS_LEFTTEXT, TRUE )

Here you can download a sample:
WIKI_CheckboxTextAtLeft.zip