Tornado

Tornado 2.0
User’s Guide
Table 3-2
Tornado UI Tcl Extensions Used in Launcher Customization Examples
Tcl Extension
noticePost
menuButtonCreate
Description
Display a popup notice or a file selector.
Add a command to an existing menu.
Re-Reading Tcl Initialization
Because the launcher has no direct command-line access to Tcl, it is not as
convenient as other tools (such as WindSh or CrossWind) for experimentation with
Tcl extensions. The following example makes things a little easier: it adds a
command to the File menu that reloads the .wind/launch.tcl file. This avoids
having to Quit the launcher and invoke it again, every time you change launcher
customization.
Example 3-1
Tcl Reinitialization
# "Reinitialize" command for Launcher.
# Adds item to File menu; calls Tcl "source" primitive directly.
menuButtonCreate File "Re-Read Tcl" T {
source ~/.wind/launch.tcl
}
Quit Launcher Without Prompting
When you select the Quit command from the launcher File menu, the launcher
displays the short form shown in Figure 3-6 to make sure you selected Quit
intentionally.
Figure 3-6
Form: Quit Confirmation
86