Name
qcritical — information dialog displaying a critical message
Syntax
qcritical caption text [button-0-text] [button-1-text] [button-2-text]
Description
The qcritical command displays a read-only warning dialog with one or more buttons, with a caption. The default is a single 'OK' button. The dialog is modal, therefore execution is halted until the user closes the dialog. An accompanying red icon underlines the severity of the message.
The dialog may optionally have up to three buttons to replace the default 'OK' button. The buttons are implicitly numbered 0, 1, 2. The command will return the number corresponding to the button pressed by the user.
Arguments
caption
Dialog title.
text
The main text of the dialog
button-x-text
Text to appear on button number x. There may be 1, 2, or 3 buttons provided in place of the default 'OK' button.
Examples
Ex.1: Critical dialog
# A dialog showing a critical message qcritical "Critical Error" "Failed to find entry"
The above example shows the simplest possible use of qcritical. The 'OK' button is created automatically.
Ex.2: Critical dialog with extra buttons
# Critical message with title and buttons.
# Returns 0 (OK), 1 (Cancel), 2 (Details)
set button [qcritical Error "Failed to open file" OK Cancel Details]
if { $button == 0 } {
# OK button was pressed
} elseif { $button == 1 } {
# Cancel buttons was pressed
} elseif { $button == 2 } {
# Details buttons was pressed
}
Example Critical dialog with extra buttons shows a warning dialog with a title and extra buttons. The number 0, 1, or 2 is returned to the program, depending on which button the user clicks.