qcritical - information dialog displaying a critical message

Name

qcritical — information dialog displaying a critical message

Syntax

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.