Xojo array of controls for free#
Xojo array of controls code#
Xojo array of controls plus#
Xojo array of controls windows#

Closing the control instance so it is removed from theīecause we are forwarding the received Pressed event from the DesktopButton to the ControlActionCallback method, and it is raising the ControlPressed method passing along the received instance, we need to define that Event in our BaseContainer subclass using the following values in the associated Inspector Panel: RemoveHandler DesktopButton(tControl).Pressed, AddressOf ControlActionCallback We need to remove the callback method from the original Var tControl As DesktopUIControl = Controls.Pop

Xojo array of controls code#

The third and last method we need to add to our BaseContainer subclass is the one responsible of removing the last added control add a new method to the BaseContainer subclass using the following values:Īnd write the following snippet of code in the associated Code Editor for the Method: If Controls.LastIndex -1 Then Parameters: tControl As DesktopUIControlĪnd write this line of code in the associated Code Editor: RaiseEvent ControlPressed(tControl) 3.Add a new Method to BaseContainer using the following values in the Inspector Panel: calling the new AddControl method for thatĪs you can see, we are using the AddHandler method to substitute the original Event fired by the control with our own Method so let’s create that. Adding the new control instance to the array so we can catch it and forward it to theĪddHandler nControl.Pressed, AddressOf ControlActionCallback We set the method to be called by the instance

Xojo array of controls for free#

On macOS we get the default height for free NControl.Name = cInitialName + idxNumber.ToString Var idxNumber As Integer = Controls.LastIndex + 1 and setting the expected values so it is visible Creating the new DesktopButton instance to be added StartY = startY + Controls(Controls.LastIndex).Height + 20 exceeds the available BaseContainer width We need to adjust the X/Y coordinates if the control Var startY As Integer = If(Controls.Count = 0, 20, Controls(Controls.LastIndex).Top) Var startX As Integer = If(Controls.Count = 0, 20, Controls(Controls.LastIndex).Left + cWidth + 20) Initial X and Y coordinates for the control instance Static cInitialName As String = 'ControlName' Write the following snippet of code in the associated Code Editor for the Method: // Setting static values for the new Button instances Add a new Method setting the following values in the associated Inspector Panel: We are going to need some Methods in the BaseContainer, starting with the one responsible for adding new DesktopButton instances. Use the Inspector panel to change the following properties:Īdd a new property to the BaseContainer subclass in the Navigator (use the contextual menu for that), setting the following values in the Inspector panel:Ģ. Double click on the Container in the Library so it is added to the Navigator in the IDE. Open Xojo and create a new Desktop project.

Xojo array of controls plus#

Plus we’ll make them adjust as the size of the Container changes like you see in this example below.

In order to see how this works, this example creates a Desktop project that includes multiple DesktopButton instances at runtime while also removing them from the target DesktopContainer (calling the Close method on the instance to do that). These values are relative to the left/top corner of the target window/container, so a value of top = 0 and left = 0 means to add the control at the top/left corner of the target window itself.

To make the new DesktopUIControl instance really visible in the target window or container, you’ll need to set some basic properties specifically the desired width and height values for the new instance control and also the left and top coordinate values where you expect the control to be added. The new AddControl method on DesktopWindow and DesktopContainer accepts any DesktopUIControl instance you want to add to a window or container. Continue reading and I will show you how! Instead of having to deal with control arrays, when you use Xojo 2021r3 or later you can call the new AddControl method on the DesktopWindow (or DesktopContainer) where you want to add the new control.

Xojo array of controls windows#

The process of adding new controls to windows (or containers) at runtime has been greatly simplified.