.TH wxClientDC 3erl "wx 2.2.2.1" "wxWidgets team." "Erlang Module Definition"
.SH NAME
wxClientDC \- Functions for wxClientDC class
.SH DESCRIPTION
.LP
\fIwxClientDC\fR\& is primarily useful for obtaining information about the window from outside EVT_PAINT() handler\&.
.LP
Typical use of this class is to obtain the extent of some text string in order to allocate enough size for a window, e\&.g\&.
.LP
Note: While \fIwxClientDC\fR\& may also be used for drawing on the client area of a window from outside an EVT_PAINT() handler in some ports, this does \fInot\fR\& work on all platforms (neither wxOSX nor wxGTK with GTK 3 Wayland backend support this, so drawing using \fIwxClientDC\fR\& simply doesn\&'t have any effect there) and the only portable way of drawing is via \fIwxPaintDC\fR\&\&. To redraw a small part of the window, use \fIwxWindow:refreshRect/3\fR\& to invalidate just this part and check \fIwxWindow:getUpdateRegion/1\fR\& in the paint event handler to redraw this part only\&.
.LP
\fIwxClientDC\fR\& objects should normally be constructed as temporary stack objects, i\&.e\&. don\&'t store a \fIwxClientDC\fR\& object\&.
.LP
A \fIwxClientDC\fR\& object is initialized to use the same font and colours as the window it is associated with\&.
.LP
See: \fIwxDC\fR\&, \fIwxMemoryDC\fR\&, \fIwxPaintDC\fR\&, \fIwxWindowDC\fR\&, \fIwxScreenDC\fR\& 
.LP
This class is derived (and can use functions) from: \fIwxWindowDC\fR\& \fIwxDC\fR\&
.LP
wxWidgets docs: wxClientDC
.SH DATA TYPES
.nf

\fBwxClientDC()\fR\& = wx:wx_object()
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.fi
.SH EXPORTS
.LP
.nf

.B
new(Window) -> wxClientDC()
.br
.fi
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.RS
.LP
Types:

.RS 3
Window = wxWindow:wxWindow()
.br
.RE
.RE
.RS
.LP
Constructor\&.
.LP
Pass a pointer to the window on which you wish to paint\&.
.RE

.LP
.nf

.B
destroy(This :: wxClientDC()) -> ok
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.fi
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.RS
.LP
Destroys the object\&.
.RE