Viewport sample

Compiling

To compile the example:

• Launch EiffelStudio.
• Select Use existing Ace (control file) and click OK.
• Browse to Eiffel52\examples\vision2\viewport\.
• Choose Ace.ace
• Choose the directory where the project will be compiled, by default the same directory containing the Ace file.
• Click OK.

Running

After launching the application, you will see a window displayed with a similar appearance to the one above. Modifying the values of the spin buttons will alter the position of the pixmapped button, relative to the viewport in which it is contained.

Under the Hood

The features set_x_offset and set_y_offset are used to modify the position of the EV_VIEWPORT relative to the EV_BUTTON contained within.

This sample contains the following class:

• VIEWPORT

See Also
EV_VIEWPORT
EV_SPIN_BUTTON
EV_BUTTON