Canvas MessageBox
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Message boxes provide a simple way to report information and warnings or ask questions. In FlightGear 3.1+ using canvas.MessageBox with the Nasal scripting language, allows showing standard message boxes to the user.
Predefined Severity Levels/Icons
| Icon | Icon Name | Standard MessageBox | Description |
|---|---|---|---|
 |
"dialog-question" |
canvas.MessageBox.question(
<title>,
<text>,
cb = nil,
buttons = canvas.MessageBox.Yes
| canvas.MessageBox.No
); |
Ask the user a (yes/no) question. |
 |
"dialog-info" |
canvas.MessageBox.information(
<title>,
<text>,
cb = nil,
buttons = canvas.MessageBox.Ok
); |
Show the user some information, with only the possiblity to close the dialog. |
 |
"dialog-warning" |
canvas.MessageBox.warning(
<title>,
<text>,
cb = nil,
buttons = canvas.MessageBox.Ok
); |
Show the user a non critical warning, with only the possiblity to close the dialog. |
 |
"dialog-error" |
canvas.MessageBox.critical(
<title>,
<text>,
cb = nil,
buttons = canvas.MessageBox.Ok
); |
Notify the user of a critical error or failure, with only the possiblity to close the dialog. |
Examples
 |
canvas.MessageBox.info("Success", "The operation has successfully completed."); |
 |
canvas.MessageBox.question(
"Do you want it?",
"The question is: Do you want to get a real question?.",
func(sel)
{
if( sel == canvas.MessageBox.Yes )
print("I only know that the answer is 42.");
else
print("Ok, I will not give you a real question.");
}
); |
 |
canvas.MessageBox.warning(
"Warning...",
"Have you read this warning? If you want it will not be shown again.",
func(sel)
{
if( sel != canvas.MessageBox.Ok )
return;
print("You have been warned. Let the games begin...");
},
canvas.MessageBox.Ok
| canvas.MessageBox.Cancel
| canvas.MessageBox.DontShowAgain
); |