c03648c251
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4328 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
55 lines
2.7 KiB
TeX
55 lines
2.7 KiB
TeX
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%% Name: tsamples.tex
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%% Purpose: Samples description
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%% Author: Vadim Zeitlin
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%% Modified by:
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%% Created: 02.11.99
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%% RCS-ID: $Id$
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%% Copyright: (c) wxWindows team
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%% Licence: wxWindows licence
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\section{wxWindows samples}\label{samples}
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Probably the best way to learn wxWindows is by reading the source of some 50+
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samples provided with it. Many aspects of wxWindows programming can be learnt
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from them, but sometimes it is not simple to just choose the right sample to
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look at. This overview aims at describing what each sample does/demonstrates to
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make it easier to find the relevant one if a simple grep through all sources
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didn't help. They also provide some notes about using the samples and what
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features of wxWindows are they supposed to test.
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\subsection{DnD sample}\label{samplednd}
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This sample shows both clipboard and drag and drop in action. It is quite non
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trivial and may be safely used as a basis for implementing the clipboard and
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drag and drop operations in a real-life program.
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When you run the sample, its screen is split in several parts. On the top,
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there are two listboxes which show the standard derivations of
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\helpref{wxDropTarget}{wxdroptarget}:
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\helpref{wxTextDropTarget}{wxtextdroptarget} and
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\helpref{wxFileDropTarget}{wxfiledroptarget}.
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The middle of the sample window is taken by the log window which shows what is
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going on (of course, this only works in debug builds) and may be helpful to see
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the sequence of steps of data transfer.
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Finally, the last part is used for two things: you can drag text from it to
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either one of the listboxes (only one will accept it) or another application
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and, also, bitmap pasted from clipboard will be shown there.
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So far, everything we mentioned was implemented with minimal amount of code
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using standard wxWindows classes. The more advanced features are demonstrated
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if you create a shape frame from the main frame menu. A shape is a geometric
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object which has a position, size and color. It models some
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application-specific data in this sample. A shape object supports its own
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private \helpref{wxDataFormat}{wxdataformat} which means that you may cut and
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paste it or drag and drop (between one and the same or different shapes) from
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one sample instance to another (or the same). However, chances are that no
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other program supports this format and so shapes can also be rendered as
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bitmaps which allows them to be pasted/dropped in many other applications.
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Take a look at DnDShapeDataObject class to see how you may use
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\helpref{wxDataObject}{wxdataobject} to achieve this.
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