Hello ​@bpatidar72 ,

In Acumatica, we have the PXRichTextEdit control, which provides the rich text functionality you're looking for.
In the screenshot below, you can see how it is used on the Non-Stock Items screen.

On the IN202000.aspx page (Non-Stock Items screen), PXRichTextEdit is used like this:

<px:PXRichTextEdit ID="edBody" runat="server" DataField="Body" Style="border-width: 0px; border-top-width: 1px; width: 100%;"
    DatafieldPreviewGraph="PX.Objects.IN.InventoryItemMaint" DatafieldPreviewView="Item" 
				AllowAttached="true" AllowSearch="true" AllowLoadTemplate="false" AllowSourceMode="true">
    <AutoSize Enabled="True" MinHeight="216" />
    <LoadTemplate TypeName="PX.SM.SMNotificationMaint" DataMember="Notifications" ViewName="NotificationTemplate" ValueField="notificationID" TextField="Name" DataSourceID="ds" Size="M"/>
</px:PXRichTextEdit>

If I understood your question correctly, once you have a field configured like this, you can easily use its text value in any action or button.
Simply reference the corresponding DataField in your action, and it will return the entered rich text value.

Add custom button on Acumatica Rich textbox control, click event not working for custom button

I want to add custom buttons on Acumatica rich textbox control, using below code i have added custom buttons on rich textbox but click event not working.

public class CustomRichTextBox:PXRichTextEdit {   
 protected override void OnInit(EventArgs e) {
        base.OnInit(e);
        AddCustomButton("Add Var", "AddList", "AddList");
    }

    private void AddCustomButton(string text, string commandName, string commandArgument) {
        PXButton button = new PXButton {
            Key = "cmd" + commandName,
            Text = text,
            CommandName = commandName,
            CommandArgument = commandArgument,
            Target = "ds",
            CommandSourceID = "ds",
            AutoCallBack = { ActiveBehavior = true, Enabled = true, Command = commandName, Target = "ds", Behavior = { CommitChanges = true }, }

        };
        button.Click += new EventHandler(CustomButton_Click);
        base.Controls.Add(button);
    }

    public void CustomButton_Click(object sender, EventArgs e) {
        Button button = sender as Button;
        if(button != null) {
            string command = button.CommandName;
        }
    }
}
}

Hello ​@bpatidar72 ,

Could you please clarify what you mean by saying, “I’ve added custom buttons into the richTextBox”? How exactly did you add these custom buttons to Acumatica’s UI?

Hi, I want to create custom control for rich textbox and this rich textbox have some custom button. this custom control I can use in multiple screens.  Acumatica UI, I have not found any solution to add custom button on existing Richt textbox control. So, I have extended PXRichTextEdit class.