TdxCustomRibbon.BeginUpdate Method

Postpones all Ribbon UI redraw operations that reflect any content or appearance change until an EndUpdate procedure call.

Declaration

procedure BeginUpdate;

Remarks

Every time you manage Ribbon UI elements or change Ribbon control settings, the control redraws itself to reflect the change. Enclose multiple Ribbon control setting changes between BeginUpdate and EndUpdate procedure calls to avoid UI flickering due to excessive redraw operations and improve performance.

BeginUpdate/EndUpdate Calls and Batch Changes

A BeginUpdate procedure call disables notifications and postpones all changes until an EndUpdate call. A subsequent EndUpdate call does the following:

• Re-enables change notifications and corresponding redraw operations
• Applies all changes made after a BeginUpdate call
• Sends corresponding notifications in a batch
• Redraws the Ribbon control

Note

Ensure that every BeginUpdate procedure call is followed by an EndUpdate procedure call, even if an exception occurs. Otherwise, the Ribbon UI remains frozen and unresponsive.

Code Example: Apply Individual Ribbon Skin and Color Accent

The following code example applies the built-in Colorful skin and its Green color accent to the Ribbon control in a TdxSpreadSheet control-based application that uses the WXI global skin and its Sharpness palette:

Delphi

uses
  dxRibbon;  // This unit declares the TdxRibbon class
// ...
procedure TMyForm.FormCreate(Sender: TObject);
begin
  DisableAero := True;
  dxRibbon1.BeginUpdate;  // Initiates the following batch change
  try
    dxRibbon1.UseGlobalSkin := bFalse;
    dxRibbon1.Style := rsOffice365;
    dxRibbon1.ColorSchemeName := 'Colorful';
    dxRibbon1.ColorSchemeAccent := rcsaGreen;
  finally
    dxRibbon1.EndUpdate;  // Calls EndUpdate regardless of the batch operation's success
  end;
end;

C++

#include "dxRibbon.hpp"  // This header declares the TdxRibbon class
// ...
void __fastcall TMyForm::FormCreate(TObject *Sender)
{
  DisableAero = true;
  dxRibbon1->BeginUpdate();  // Initiates the following batch change
  try
  {
    dxRibbon1->UseGlobalSkin = bFalse;
    dxRibbon1->Style = rsOffice365;
    dxRibbon1->ColorSchemeName = "Colorful";
    dxRibbon1->ColorSchemeAccent = rcsaGreen;
  }
  __finally
  {
    dxRibbon1->EndUpdate();  // Calls EndUpdate regardless of the batch operation's success
  }
}