.TH wxPaintEvent 3erl "wx 2.2.2.1" "wxWidgets team." "Erlang Module Definition"
.SH NAME
wxPaintEvent \- Functions for wxPaintEvent class
.SH DESCRIPTION
.LP
A paint event is sent when a window\&'s contents needs to be repainted\&.
.LP
The handler of this event must create a \fIwxPaintDC\fR\& object and use it for painting the window contents\&. For example:
.LP
Notice that you must \fInot\fR\& create other kinds of \fIwxDC\fR\& (e\&.g\&. \fIwxClientDC\fR\& or \fIwxWindowDC\fR\&) in EVT_PAINT handlers and also don\&'t create \fIwxPaintDC\fR\& outside of this event handlers\&.
.LP
You can optimize painting by retrieving the rectangles that have been damaged and only repainting these\&. The rectangles are in terms of the client area, and are unscrolled, so you will need to do some calculations using the current view position to obtain logical, scrolled units\&. Here is an example of using the \fIwxRegionIterator\fR\& (not implemented in wx) class:
.LP
Remark: Please notice that in general it is impossible to change the drawing of a standard control (such as \fIwxButton\fR\&) and so you shouldn\&'t attempt to handle paint events for them as even if it might work on some platforms, this is inherently not portable and won\&'t work everywhere\&.
.LP
See: Overview events 
.LP
This class is derived (and can use functions) from: \fIwxEvent\fR\&
.LP
wxWidgets docs: wxPaintEvent
.SH "EVENTS"

.LP
Use \fIwxEvtHandler:connect/3\fR\& with \fIwxPaintEventType\fR\& to subscribe to events of this type\&.
.SH DATA TYPES
.nf

\fBwxPaintEvent()\fR\& = wx:wx_object()
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.fi
.nf

\fBwxPaint()\fR\& = #wxPaint{type = wxPaintEvent:wxPaintEventType()}
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.fi
.nf

\fBwxPaintEventType()\fR\& = paint
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.fi