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Mention graphics device classes

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@53342 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling
2008-04-25 10:06:26 +00:00
parent 28792a701f
commit 12133c3b42
1 changed files with 6 additions and 3 deletions
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9
interface/dc.h
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@@ -15,6 +15,10 @@
a window can have a device context associated with it, and a printer also
has a device context. In this way, the same piece of code may write to a
number of different devices, if the device context is used as a parameter.
wxWidgets offers alternative drawing classes based on the modern drawing
backends GDI+, CoreGraphics and Cairo. See wxGraphicsContext, wxGraphicsRenderer
and related classes.
Notice that wxDC is an abstract base class and can't be created directly,
please use wxPaintDC, wxClientDC, wxWindowDC, wxScreenDC, wxMemoryDC or
@@ -32,9 +36,8 @@
@section dc_alpha Support for Transparency / Alpha Channel
On Mac OS X, when using Core Graphics (wxMAC_USE_CORE_GRAPHICS set to 1),
colors with alpha are supported. Instances wxPen or wxBrush that are built
from wxColour use the color's alpha values when stroking or filling.
On Mac OS X colors with alpha are supported. Instances wxPen or wxBrush
that are built from wxColour use the color's alpha values when stroking or filling.
@library{wxcore}
@category{dc,gdi}