Common Controls



To compile the example:

  • Launch EiffelStudio.
  • Click Add project
  • Browse to $ISE_EIFFEL\examples\wel\comctrls\.
  • Choose comctrls.ecf
  • Choose the location where the project will be compiled, by default the same directory containing the configuration file. If you select another directory than the default one, please copy icons (*.ico) and resource files (*.rc) from the default directory (the one containing the ecf file) to the new one.
  • Click OK.


After launching the program, a window will be displayed as illustrated above. Selecting "Progress bar demonstration" from the "File" menu will update the progress bar to a full state. Leaving the mouse stationary above the track bar, progress bar or toolbar buttons will cause a tooltip control to be displayed.

Under the Hood

There is one WEL_TOOLTIP used for all the controls, but each control adds a new WEL_TOOL_INFO to provide different output for each control. The feature on_notify has been redefined to handle the Ttn_needtext notification which is posted by a control, and received by the controls parent, when a control needs to display a tooltip. The feature on_menu_select has been redefined to output the text of the selected menu item in the WEL_STATUS_WINDOW located at the bottom of MAIN_WINDOW. This sample contains the following classes: