Resize Event

Control::Resize Event


Occurs when the control is resized.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

event EventHandler^ Resize {
	void add(EventHandler^ value);
	void remove(EventHandler^ value);

To determine the Size of the resized control, you can cast the sender parameter of the registered M:System.Windows.Forms.Control.EventHandler method to a Control and get its Size property (or Height and Width properties individually).

To handle custom layouts, use the Layout event instead of the Resize event. The Layout event is raised in response to a Resize event, but also in response to other changes that affect the layout of the control.

For more information about handling events, see Handling and Raising Events.

Legacy Code Example

The following code example handles the Resize event of a Form. When the form is resized, the event handler ensures that the form stays square (its Height and Width remain equal). To run this example, make sure and associate this event-handling method with the form’s Resize event.

   void Form1_Resize( Object^ sender, System::EventArgs^ /*e*/ )
      Control^ control = dynamic_cast<Control^>(sender);

      // Ensure the Form remains square (Height = Width).
      if ( control->Size.Height != control->Size.Width )
         control->Size = System::Drawing::Size( control->Size.Width, control->Size.Width );

.NET Framework
Available since 1.1
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