Dialog boxes
A dialog box is created by form instruction. The interpreter needs an init message to create the controls and a paint message to show text and pictures.
<form>
<init>
…
….
</init>
<paint>
….
….
</paint>
</form>
The timer tag is called cyclically by the system. All timer controlled instructions have to be programmed within that tag.
The first dialog box shows a caption and a text.
The second dialog box shows a text within the timer message. That text is moved by one pixel after drawing.
For that reason a global variable var_xpos has to be declared and initialized with the value 10. The operation instruction <op> is used to calculate the new position. The var_xpos variable is set to 10 if value 180 has been reached to keep the text visible.
After everything has worked perfectly, a picture is added. The control supports the picture format bitmap and PNG. All pictures have to be stored into the application directory of machine tool builders.
Wordart picture
802d sl
special screens
