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<title>Iczelion Win32asm Tutorial 18: Common Controls</title>
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<h1>
<font face="Arial,Helvetica"><font color="#FFFF99">Tutorial 18: Common
Controls</font></font></h1></center>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>We will
learn what common controls are and how to use them. This tutorial will
be a quick introduction to them only.</font></font></font>
<br><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Download
the example source code<a href="files/tut18.zip"> here</a>.</font></font></font>
<h3>
<font face="Arial,Helvetica"><font color="#00CC00"><font size=+0>Theory:</font></font></font></h3>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Windows
95 comes with several user-interface enhancements over Windows 3.1x. They
make the GUI richer. Several of them are in widely used before Windows
95 hit the shelf, such as status bar, toolbars etc. Programmers have to
code them themselves. Now Microsoft has included them with Windows 9x and
NT. We will learn about them here.</font></font></font>
<br><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>These
are the new controls:</font></font></font>
<ul>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Toolbar</font></font></font></li>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Tooltip</font></font></font></li>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Status
bar</font></font></font></li>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Property
sheet</font></font></font></li>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Property
page</font></font></font></li>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Tree view</font></font></font></li>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>List view</font></font></font></li>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Animation</font></font></font></li>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Drag list</font></font></font></li>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Header</font></font></font></li>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Hot-key</font></font></font></li>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Image
list</font></font></font></li>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Progress
bar</font></font></font></li>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Right
edit</font></font></font></li>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Tab</font></font></font></li>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Trackbar</font></font></font></li>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Up-down</font></font></font></li>
</ul>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Since
there are many of them, loading them all into memory and registering them
would be a waste of resource. All of them, with the exception of rich edit
control, are stored in comctl32.dll with applications can load when they
want to use the controls. Rich edit control resides in its own dll, richedXX.dll,
because it's very complicated and hence larger than its brethren.</font></font></font>
<br><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>You
can load comctl32.dll by including a call to <b>InitCommonControls</b>
in your program. InitCommonControls is a function in comctl32.dll, so referring
to it anywhere in your code will make PE loader load comctl32.dll when
your program runs.<b>You don't have to execute it, just include it in your
code somewhere</b>. This function does <b>NOTHING!</b> Its only instruction
is "ret". Its sole purpose is to include reference to comctl32.dll in the
import section so that PE loader will load it whenever the program is loaded.
The real workhorse is the DLL entrypoint function which registers all common
control classes when the dll is loaded. Common controls are created based
on those classes just like other child window controls such as edit, listbox
etc.</font></font></font>
<br><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Rich
edit is another matter entirely. If you want to use it, you have to call
LoadLibrary to load it explicitly and call FreeLibrary to unload it.</font></font></font>
<br><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Now
we learn how to create them. You can use a resource editor to incorporate
them into dialog boxes or you can create them yourself. Nearly all common
controls are created by calling CreateWindowEx or CreateWindow, passing
it the name of the control class. Some common controls have specific creation
functions , however, they are just wrappers around CreateWindowEx to make
it easier to create those controls. Existing specific creation functions
are listed below:</font></font></font>
<ul>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>CreateToolbarEx</font></font></font></li>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>CreateStatusWindow</font></font></font></li>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>CreatePropertySheetPage</font></font></font></li>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>PropertySheet</font></font></font></li>
<li>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>ImageList_Create</font></font></font></li>
</ul>
<font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>In order
to create common controls, you have to know their class names. They are
listed below:</font></font></font>
<br><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1></font></font></font>
<center><table BORDER WIDTH="62%" >
<tr BGCOLOR="#3366FF">
<td>
<center><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Class
Name</font></font></font></center>
</td>
<td>
<center><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Common
Control</font></font></font></center>
</td>
</tr>
<tr>
<td><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>ToolbarWindow32</font></font></font></td>
<td><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Toolbar</font></font></font></td>
</tr>
<tr>
<td><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>tooltips_class32</font></font></font></td>
<td><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Tooltip</font></font></font></td>
</tr>
<tr>
<td><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>msctls_statusbar32</font></font></font></td>
<td><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Status
bar</font></font></font></td>
</tr>
<tr>
<td><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>SysTreeView32</font></font></font></td>
<td><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Tree
view</font></font></font></td>
</tr>
<tr>
<td><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>SysListView32</font></font></font></td>
<td><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>List
view</font></font></font></td>
</tr>
<tr>
<td><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>SysAnimate32</font></font></font></td>
<td><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Animation</font></font></font></td>
</tr>
<tr>
<td><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>SysHeader32</font></font></font></td>
<td><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>Header</font></font></font></td>
</tr>
<tr>
<td><font face="Arial,Helvetica"><font color="#FFFFFF"><font size=-1>msctls_hotkey32</font></font></font></td>
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