.. wxPython Phoenix documentation

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   Copyright: (c) 2011-2020 by Total Control Software
   License:   wxWindows License

.. include:: headings.inc

.. currentmodule:: wx.lib.colourchooser.canvas

.. highlight:: python



.. _wx.lib.colourchooser.canvas.BitmapBuffer:

==========================================================================================================================================
|phoenix_title|  **wx.lib.colourchooser.canvas.BitmapBuffer**
==========================================================================================================================================

A screen buffer class.

This class implements a screen output buffer. Data is meant to
be drawn in the buffer class and then blitted directly to the
output device, or on-screen window.



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|class_hierarchy| Class Hierarchy
=================================

.. raw:: html

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   Inheritance diagram for class <strong>BitmapBuffer</strong>:
   </div>
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   <div id="toggleBlock-content" style="display:none;">
   <p class="graphviz">
   <center><img src="_static/images/inheritance/wx.lib.colourchooser.canvas.BitmapBuffer_inheritance.svg" alt="Inheritance diagram of BitmapBuffer" usemap="#dummy" class="inheritance"/></center>
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|super_classes| Known Superclasses
==================================

:class:`wx.MemoryDC`

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|method_summary| Methods Summary
================================

================================================================================ ================================================================================
:meth:`~wx.lib.colourchooser.canvas.BitmapBuffer.__init__`                       Initialize the empty buffer object.
:meth:`~wx.lib.colourchooser.canvas.BitmapBuffer.GetBitmap`                      Returns the internal bitmap for direct drawing.
:meth:`~wx.lib.colourchooser.canvas.BitmapBuffer.GetPixelColour`                 Gets the color value of the pixel at the given
================================================================================ ================================================================================


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|api| Class API
===============


.. class:: BitmapBuffer(wx.MemoryDC)

   A screen buffer class.
   
   This class implements a screen output buffer. Data is meant to
   be drawn in the buffer class and then blitted directly to the
   output device, or on-screen window.

   .. method:: __init__(self, width, height, colour)

      Initialize the empty buffer object.


   .. method:: GetBitmap(self)

      Returns the internal bitmap for direct drawing.


   .. method:: GetPixelColour(self, x, y)

      Gets the color value of the pixel at the given
      cords.