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      <DIV id=3Dcontentdiv><!-- Article Starts -->
      <UL class=3Ddownload>
        <LI><A=20
        =
href=3D"http://www.codeproject.com/wtl/WTL4MFC3/WTL4MFC3_demo.zip">Downlo=
ad=20
        demo project - 60 KB</A> </LI></UL><!-- Add the rest of your =
HTML here -->
      <H2>Contents</H2>
      <UL>
        <LI><A=20
        =
href=3D"http://www.codeproject.com/wtl/wtl4mfc3.asp#intro">Introduction</=
A>=20

        <LI><A=20
        =
href=3D"http://www.codeproject.com/wtl/wtl4mfc3.asp#barsinframe">Toolbars=
=20
        and Status Bars in a Frame</A>=20
        <LI><A=20
        =
href=3D"http://www.codeproject.com/wtl/wtl4mfc3.asp#appwiztb">AppWizard=20
        Code for Toolbars and Status Bars</A>=20
        <UL>
          <LI><A=20
          =
href=3D"http://www.codeproject.com/wtl/wtl4mfc3.asp#createbars">How=20
          CMainFrame creates the bars</A>=20
          <LI><A=20
          =
href=3D"http://www.codeproject.com/wtl/wtl4mfc3.asp#barsshowhide">Showing=
=20
          and hiding the bars</A>=20
          <LI><A=20
          =
href=3D"http://www.codeproject.com/wtl/wtl4mfc3.asp#builtins">Built-in=20
          features of the bars</A>=20
          <LI><A=20
          =
href=3D"http://www.codeproject.com/wtl/wtl4mfc3.asp#diffstyles">Creating =

          a toolbar with a different style</A> </LI></UL>
        <LI><A =
href=3D"http://www.codeproject.com/wtl/wtl4mfc3.asp#tbeditor">The=20
        Toolbar Editor</A>=20
        <LI><A=20
        =
href=3D"http://www.codeproject.com/wtl/wtl4mfc3.asp#uiudpatebtns">UI=20
        Updating Toolbar Buttons</A>=20
        <UL>
          <LI><A=20
          =
href=3D"http://www.codeproject.com/wtl/wtl4mfc3.asp#enabletbupdate">Enabl=
ing=20
          toolbar UI updating</A> </LI></UL>
        <LI><A =
href=3D"http://www.codeproject.com/wtl/wtl4mfc3.asp#userebar">Using=20
        a Rebar Instead of a Plain Toolbar</A>=20
        <LI><A=20
        =
href=3D"http://www.codeproject.com/wtl/wtl4mfc3.asp#multipanesb">Multi-Pa=
ne=20
        Status Bars</A>=20
        <UL>
          <LI><A=20
          =
href=3D"http://www.codeproject.com/wtl/wtl4mfc3.asp#uiupdatesb">UI=20
          updating the panes</A> </LI></UL>
        <LI><A =
href=3D"http://www.codeproject.com/wtl/wtl4mfc3.asp#upnext">Up=20
        Next: All About Dialogs</A>=20
        <LI><A=20
        =
href=3D"http://www.codeproject.com/wtl/wtl4mfc3.asp#references">Reference=
s</A>=20

        <LI><A=20
        =
href=3D"http://www.codeproject.com/wtl/wtl4mfc3.asp#revisionhistory">Revi=
sion=20
        History</A> </LI></UL>
      <H2><A name=3Dintro></A>Introduction to Part III</H2>
      <P>Ever since they were made into common controls in Windows 95, =
toolbars=20
      and status bars have become commonplace. MFC's support for =
multiple=20
      floating toolbars also helped their popularity. In later common =
controls=20
      updates, rebars (or coolbars as they were originally called) added =
another=20
      way to present toolbars. In Part III, I will cover how WTL =
supports these=20
      kinds of control bars and how to use them in your own apps.</P>
      <H2><A name=3Dbarsinframe></A>Toolbars and Status Bars in a =
Frame</H2>
      <P><CODE>CFrameWindowImpl</CODE> has three <CODE>HWND</CODE> =
members that=20
      are set when the frame window is created. We've already seen=20
      <CODE>m_hWndClient</CODE>, which is the handle of the "view" =
window in the=20
      frame's client area. Now we'll encounter two others:</P>
      <UL>
        <LI><CODE>m_hWndToolBar</CODE>: <CODE>HWND</CODE> of the toolbar =
or=20
        rebar=20
        <LI><CODE>m_hWndStatusBar</CODE>: <CODE>HWND</CODE> of the =
status bar=20
        </LI></UL>
      <P><CODE>CFrameWindowImpl</CODE> only supports one toolbar, and =
there is=20
      no equivalent to the MFC system of multiple dockable toolbars. If =
you need=20
      more than one toolbar, and don't want to hack around in=20
      <CODE>CFrameWindowImpl</CODE> internals, then you will need to use =
a=20
      rebar. I will cover both of these options and show how to select =
from them=20
      in the AppWizard.</P>
      <P>The <CODE>CFrameWindowImpl::OnSize()</CODE> handler calls=20
      <CODE>UpdateLayout()</CODE>, which does two things: position the =
bars, and=20
      resize the view window to fill the client area.=20
      <CODE>UpdateLayout()</CODE> calls =
<CODE>UpdateBarsPosition()</CODE> which=20
      does the actual work. The code is quite simple, it just sends a=20
      <CODE>WM_SIZE</CODE> message to the toolbar and status bar, if =
those bars=20
      have been created. The bars' default window procedures take care =
of moving=20
      the bars to the top or bottom of the frame window.</P>
      <P>When you tell the AppWizard to give your frame a toolbar and =
status=20
      bar, the wizard puts code to create the bars in=20
      <CODE>CMainFrame::OnCreate()</CODE>. Let's take a closer look at =
that code=20
      now, as we write yet another clock app.</P>
      <H2><A name=3Dappwiztb></A>AppWizard Code for Toolbars and Status =
Bars</H2>
      <P>We'll start a new project and have the wizard create a toolbar =
and=20
      status bar for our frame. Start a new WTL project called =
WTLClock2. On the=20
      first AppWizard page, choose an SDI app and check <I>Generate CPP=20
      files</I>:</P>
      <P><IMG height=3D387 alt=3D" [AppWizard pg 1 - 22K] "=20
      src=3D"http://www.codeproject.com/wtl/WTL4MFC3/appwiz1.png" =
width=3D477=20
      align=3Dbottom border=3D0></P>