35 lines
801 B
Markdown
35 lines
801 B
Markdown
# onError
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`onError(self, err)`<br>
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This is a custom event which gets triggered as soon as the program catched a error.
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Here is a example on how to add a onError event to your program:
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```lua
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local basalt = require("basalt")
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local main = basalt.createFrame()
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local aProgram = main:addProgram():execute("rom/programs/shell.lua")
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local function onProgramError(self, err)
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local errFrame = main:addFrame()
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:setSize(30, 10)
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:setPosition("parent.w / 2 - self.w / 2", "parent.h / 2 - self.h / 2")
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errFrame:addLabel()
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:setPosition(2, 3)
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:setSize("parent.w - 2", "parent.h - 3")
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:setText(err)
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errFrame:addButton()
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:setPosition("parent.w", 1)
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:setSize(1, 1)
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:setText("X")
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:onClick(function()
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errFrame:remove()
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end)
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end
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aProgram:onError(onProgramError)
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```
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