Hi there,
I've been trying to build a GUI in App Designer where:
- you select a certain drop down value;
- You press a button;
- You get a message or the answer displayed in a text box, depending on the selected drop down value.
I can't seem to get this done though. I don't really know how to connect the selected drop down value to a certain outcome in the textbox, AFTER the button is pressed. In fact, I'm generally struggling with these callback functions.
Can anyone help me?
My current code is as follows:
methods (Access = private) % Callback function
function ScenarioDropDownValueChanged(app, event) value = app.ScenarioDropDown.Value; end % Button pushed function: BerekenenButton
function BerekenenButtonPushed(app, event) if ScenarioDropDownValueChanged(value,'-kies-') app.BestesystemenTextArea.Value='error, select scenario' elseif ScenarioDropDownValueChanged(value,'Selection1') app.BestesystemenTextArea.Value='Systeem 1' else app.BestesystemenTextArea.Value='Systeem 2' end end % App initialization and construction
methods (Access = private) % Create UIFigure and components
function createComponents(app) % Create BerekenenButton
app.BerekenenButton = uibutton(app.UIFigure, 'push'); app.BerekenenButton.ButtonPushedFcn = createCallbackFcn(app, @BerekenenButtonPushed, true); app.BerekenenButton.FontWeight = 'bold'; app.BerekenenButton.Position = [266 219 100 22]; app.BerekenenButton.Text = 'Berekenen'; % Create BestesystemenTextArea
app.BestesystemenTextArea = uitextarea(app.UIFigure); app.BestesystemenTextArea.Position = [272 97 150 60]; % Create ScenarioDropDown
app.ScenarioDropDown = uidropdown(app.UIFigure); app.ScenarioDropDown.Items = {'-kies-', 'Selection1', 'Selection2', 'Selection3'}; app.ScenarioDropDown.ValueChangedFcn = createCallbackFcn(app, @ScenarioDropDownValueChanged, true); app.ScenarioDropDown.Position = [281 368 145 22]; app.ScenarioDropDown.Value = '-kies-'; end
Thank you,
Jo
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