---
name: "PDL::Graphics::TriD::ButtonControl"
section: "3pm"
platform: "linux"
package: "libpdl-graphics-trid-perl"
version: "2.102-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/PDL::Graphics::TriD::ButtonControl"
---

# PDL::Graphics::TriD::ButtonControl(3pm)

default event handler subroutines

## NAME

PDL::Graphics::TriD::ButtonControl - default event handler subroutines

## FUNCTIONS

### new()

Bless an oject into the class ButtonControl, expects the associated Window object to be supplied as an argument.

The ButtonControl class is a base class which all TriD event controllers should inherit from.  By itself it does not do much.  It defines ButtonPress and ButtonRelease functions which are expected by the Event loop.

### mouse\_moved

A do-nothing function to prevent errors if not defined in a subclass

### ButtonRelease

A do nothing function to prevent errors if not defined in a subclass

### ButtonPress

Activates the viewport the mouse is inside when pressed

### set\_wh

Define the width and Height of the window for button control