property OnMouseUp: TMouseEvent;
Fired when the user releases a mouse button. The Sender parameter references the TPdfView instance that raised the event, so a single handler can serve multiple views by inspecting Sender.
Typical uses include: commit a custom selection, finish a pan gesture, or trigger a click-to-zoom action. Because the handler runs on the VCL main thread, you can update form controls and call other VCL APIs directly.
Handlers must return quickly — PDFium rendering and form filling occur on the same thread, and any delay here postpones the next page repaint.
TabStop to True if you want this control to participate in tab-key focus traversal so that keyboard events are delivered.PdfView1.OnMouseUp := MyHandler.Set Cursor / Set Caret calls on TPdfView to keep visual feedback synchronized.
procedure TForm1.PdfViewOnMouseUp(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
// commit a custom selection, finish a pan gesture, or trigger a click-to-zoom action
Caption := Format('OnMouseUp on page %d', [PdfView1.PageNumber]);
end;