TcxGridColumn.OnHeaderClick Event

Allows you to respond to clicks on the column header.

Declaration

property OnHeaderClick: TNotifyEvent read; write;

Remarks

The OnHeaderClick event occurs every time a user clicks on the column header. For instance, you can handle the OnHeaderClick event to sort data against the current column when sort operations are disabled (the Options.Sorting property is set to False).

Code Example

The following code example sorts data against the current column when sort operations are disabled:

Delphi

uses
  ..., dxCore;
//...
procedure TMyForm.Column1HeaderClick(Sender: TObject);
var
  AColumn: TcxGridColumn;
begin
  AColumn := Sender as TcxGridColumn;
  if AColumn.SortOrder = soDescending then
    AColumn.SortOrder := soAscending
  else
    AColumn.SortOrder := soDescending;
end;

C++

#pragma link "dxCore"
// ...
void __fastcall TMyForm::Column1HeaderClick(TObject *Sender) {
  TcxGridColumn *AColumn = dynamic_cast<TcxGridColumn*>(Sender);
  if (AColumn->SortOrder == soDescending) {
    AColumn->SortOrder = soAscending;
  } else {
    AColumn->SortOrder = soDescending;
  }
end;