How to automatically add buttons to the toolbar when gha is loaded？
I need to add two buttons to the toolbar. How should I write them in the gha project?
This is a button added after GH is loaded, and it needs a GH_Commonent to be inserted into the current GHDocument. How to add it to the GHA project? Is it automatically added to the toolbar after loading the GHA file?
Hello guys,
I went over this wire and this one:
Adding a button to Canvas toolbar? - Grasshopper Developer - McNeel Forum
Adding buttons to the canvas is what interested me as well. Putting together my “coding skill”, both wires and code from this:
rhino.inside-bricscad/GhUI.cs at master · Bricsys/rhino.inside-bricscad · GitHub
I can automatically add a button to the canvas as the Grasshopper is loaded.
I use Visual Studio to create my plugin. There is class which inherits from GH_AssemblyPrioroty (normally used for checking valid license)
This class has PriorityLoad() method which is called before plugin is loaded.
Code looks like this:
public override GH_LoadingInstruction PriorityLoad()
{
string userName = System.Security.Principal.WindowsIdentity.GetCurrent().Name;
if (LicensedUsers.ContainsKey(userName))
{
//Adding event, when Canvas is Created (this must be done with Canvas not DocumentEditor (otherwise DocumentEditor is null). )
Instances.CanvasCreated += Instances_CanvasCreated;
return (GH_LoadingInstruction.Proceed);
}
else
{
return (GH_LoadingInstruction.Abort);
}
}
private void Instances_CanvasCreated(GH_Canvas canvas)
{
//Copied from rhino.inside-bricscad plugin
Instances.CanvasCreated -= Instances_CanvasCreated;
GH_DocumentEditor editor = Instances.DocumentEditor;
//Check if DocumentEditor was instantiated
if (editor == null)
{
return;
}
//Finally buttons is added to the Controls
var toolbar = Grasshopper.Instances.DocumentEditor.Controls[0].Controls[1] as ToolStrip;
var button = new System.Windows.Forms.ToolStripButton("Hi from Ondřej");
toolbar.Items.Add(button);
}
And result like this:
Hope it helps.
Ondřej
4 Likes
Hi, can I ask you a question? What are LicensedUsers? Why can’t I write this dictionary.help me !!,thank you very much.
It is my own Dictionary with licenses. You should modify that part or delete If condition.
Ondřej
Hello @Bynn
I use a method which is called inside a class which inherits from “GH_AssemblyPriority”. Example bellow.
private void Instances_CanvasCreated(GH_Canvas canvas)
{
Instances.CanvasCreated -= Instances_CanvasCreated;
GH_DocumentEditor editor = Instances.DocumentEditor;
if (editor == null)
{
return;
}
else
{
MenuStrip toolbar = editor.MainMenuStrip;
toolbar.Items.Add(new EndPoints_Menu());
}
}
EndPoints_Menu is a class which inherits from “ToolStripMenuItem”.
Hope it helps.
Ondrej