[[Property:title|Common Controls]]
[[Property:weight|-13]]
[[Property:uuid|d50d633a-2ba5-995e-637c-6694cee8bf55]]
[[Image:comctrls|comctrls]]  <br/>
<br/>

==Compiling==

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'''. 

==Running==

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 [[ref:libraries/wel/reference/wel_tooltip_chart|WEL_TOOLTIP]]  used for all the controls, but each control adds a new [[ref:libraries/wel/reference/wel_tool_info_chart|WEL_TOOL_INFO]]  to provide different output for each control. The feature <code>on_notify</code> 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 <code>on_menu_select</code> has been redefined to output the text of the selected menu item in the [[ref:libraries/wel/reference/wel_status_window_chart|WEL_STATUS_WINDOW]]  located at the bottom of <code>MAIN_WINDOW</code>. 
This sample contains the following classes: 
* <code>APPLICATION_IDS</code>
* <code>MAIN_WINDOW</code>
* <code>COMCTRLS_DEMO</code>