wtl for mfc programmers, part viii.mht

大家知道wtl是window UI库

                  href=3D"http://www.codeproject.com/store/"><B>VS.NET =
2003 from=20
                  $899</B></A></TD></TR>
              <TR vAlign=3Dtop>
                <TD><IMG height=3D16=20
                  =
src=3D"http://www.codeproject.com/script/images/support_icon.gif"=20
                  width=3D16></TD>
                <TD class=3DsmallText><A=20
                  href=3D"http://www.codeproject.com/store/"><B>MSDN =
Univ. from=20
                  $1950</B></A></TD></TR>
              <TR vAlign=3Dtop>
                <TD></TD>
                <TD></TD></TR>
              <TR vAlign=3Dtop>
                <TD><IMG height=3D16=20
                  src=3D"http://www.codeproject.com/images/print.gif" =
width=3D16></TD>
                <TD class=3DsmallText><A=20
                  =
href=3D"http://www.codeproject.com/wtl/wtl4mfc8.asp?print=3Dtrue"=20
                  target=3D_print>Print version</A></TD></TR>
              <TR vAlign=3Dtop>
                <TD><IMG height=3D16=20
                  src=3D"http://www.codeproject.com/images/link.gif" =
width=3D16></TD>
                <TD class=3DsmallText><A=20
                  =
href=3D"http://www.codeproject.com/script/profile/add_bookmark.asp?t=3D0&=
amp;ct=3D%2Fwtl%2Fwtl4mfc8%2Easp&amp;guid=3DWTL4MFC8%2Fwtl9%2F13%2F2003">=
Bookmark=20
                  this</A></TD></TR></TR>
              <TR vAlign=3Dtop>
                <TD><IMG height=3D16=20
                  src=3D"http://www.codeproject.com/images/mail.gif" =
width=3D16></TD>
                <TD class=3DSmallText><A=20
                  =
href=3D"http://www.codeproject.com/script/recommend/form.asp?guid=3DWTL4M=
FC8%2Fwtl9%2F13%2F2003">Send=20
                  to a friend</A></TD></TR>
              <TR vAlign=3Dtop>
                <TD></TD>
                <TD></TD></TR>
              <TR vAlign=3Dtop>
                <TD></TD>
                <TD class=3DInfoBarHeader>My Profile</TD></TR>
              <TR>
                <TD bgColor=3Dblack colSpan=3D2><IMG height=3D1=20
                  src=3D"http://www.codeproject.com/images/space.gif"=20
              width=3D1></TD></TR>
              <TR vAlign=3Dtop>
                <TD><IMG height=3D16=20
                  =
src=3D"http://www.codeproject.com/images/profile_small.gif"=20
                  width=3D16></TD>
                <TD class=3DsmallText><A=20
                  =
href=3D"http://www.codeproject.com/script/profile/modify.asp?ct=3D/wtl/wt=
l4mfc8.asp">My=20
                  Settings</A></TD></TR>
              <TR vAlign=3Dtop>
                <TD><IMG height=3D16=20
                  =
src=3D"http://www.codeproject.com/images/submit_small.gif"=20
                  width=3D16></TD>
                <TD class=3DsmallText><A=20
                  =
href=3D"http://www.codeproject.com/script/articles/list_articles.asp?user=
id=3D273403">My=20
                  Articles</A></TD></TR>
              <TR vAlign=3Dtop>
                <TD><IMG height=3D16=20
                  =
src=3D"http://www.codeproject.com/images/bookmarks.gif"=20
                width=3D16></TD>
                <TD class=3DsmallText><A=20
                  =
href=3D"http://www.codeproject.com/script/profile/bookmark_list.asp">My=20
                  Bookmarks</A></TD></TR>
              <TR vAlign=3Dtop>
                <TD><IMG height=3D16=20
                  =
src=3D"http://www.codeproject.com/images/logoff_small.gif"=20
                  width=3D16></TD>
                <TD class=3DsmallText><A=20
                  =
href=3D"http://www.codeproject.com/script/profile/logoff.asp?ct=3D/wtl/wt=
l4mfc8.asp">Sign=20
                  out</A></TD></TR>
              <TR>
                <TD bgColor=3Dblack colSpan=3D2><IMG height=3D1=20
                  src=3D"http://www.codeproject.com/images/space.gif"=20
              width=3D1></TD></TR></TBODY></TABLE></TD></TR>
        <TR>
          <TD>&nbsp;</TD></TR>
        <TR>
          <TD>
            <CENTER>
            <SCRIPT language=3Djavascript=20
            =
src=3D"http://media.adcentriconline.com/adcentric/tag/618/685/6791">
</SCRIPT>
            <NOSCRIPT><A=20
            =
href=3D"http://media.adcentriconline.com/adcentric/click/618/685/6791"><I=
MG=20
            =
src=3D"http://media.adcentriconline.com/adcentric/data/618/685/6791;image=
"=20
            border=3D0></A> =
</NOSCRIPT><BR></CENTER><BR></TD></TR></TBODY></TABLE></TD>
    <TD width=3D5 rowSpan=3D2><IMG height=3D1=20
      src=3D"http://www.codeproject.com/images/space.gif" width=3D5> =
</TD>
    <TD align=3Dright width=3D"100%" bgColor=3Dwhite>
      <TABLE width=3D"100%">
        <TBODY>
        <TR>
          <TD class=3DsmallText vAlign=3Dtop noWrap><IMG=20
            src=3D"http://www.codeproject.com/images/prize_winner.gif"=20
            align=3DabsMiddle> &nbsp;<B>Prize winner: September, =
2003</B></TD>
          <TD noWrap align=3Dright><A name=3D__top></A>
            <TABLE>
              <TBODY>
              <TR>
                <TD class=3DsmallText align=3Dright>35 members have =
rated this=20
                  article. Result:</TD>
                <TD>
                  <TABLE cellSpacing=3D0 cellPadding=3D0 border=3D2>
                    <TBODY>
                    <TR>
                      <TD><IMG height=3D5=20
                        =
src=3D"http://www.codeproject.com/script/images/red.gif"=20
                        width=3D20 border=3D0></TD>
                      <TD><IMG height=3D5=20
                        =
src=3D"http://www.codeproject.com/script/images/red.gif"=20
                        width=3D20 border=3D0></TD>
                      <TD><IMG height=3D5=20
                        =
src=3D"http://www.codeproject.com/script/images/red.gif"=20
                        width=3D20 border=3D0></TD>
                      <TD><IMG height=3D5=20
                        =
src=3D"http://www.codeproject.com/script/images/red.gif"=20
                        width=3D20 border=3D0></TD>
                      <TD><IMG height=3D5=20
                        =
src=3D"http://www.codeproject.com/script/images/red.gif"=20
                        width=3D14 border=3D0><IMG height=3D5=20
                        =
src=3D"http://www.codeproject.com/script/images/white.gif"=20
                        width=3D6 =
border=3D0></TD></TR></TBODY></TABLE></TD></TR>
              <TR>
                <TD class=3DsmallText align=3Dright colSpan=3D2><A=20
                  title=3D"Calculated as rating x Log10(# votes)"=20
                  =
href=3D"http://www.codeproject.com/script/articles/top_articles.asp?st=3D=
2">Popularity:=20
                  7.28</A>. Rating: <B>4.71</B> out of=20
        5.</TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></TD></TR>
  <TR>
    <TD vAlign=3Dtop width=3D"100%">
      <DIV id=3Dcontentdiv><!-- Article Starts -->
      <UL class=3Ddownload>
        <LI><A=20
        =
href=3D"http://www.codeproject.com/wtl/WTL4MFC8/WTL4MFC8_demo.zip">Downlo=
ad=20
        demo project - 268K</A> </LI></UL>
      <H2>Contents</H2>
      <UL>
        <LI><A=20
        =
href=3D"http://www.codeproject.com/wtl/wtl4mfc8.asp#intro">Introduction</=
A>=20

        <LI><A=20
        =
href=3D"http://www.codeproject.com/wtl/wtl4mfc8.asp#sheetclasses">WTL=20
        Property Sheet Classes</A>=20
        <UL>
          <LI><A=20
          =
href=3D"http://www.codeproject.com/wtl/wtl4mfc8.asp#sheetmethods">CProper=
tySheetImpl=20
          methods</A> </LI></UL>
        <LI><A=20
        =
href=3D"http://www.codeproject.com/wtl/wtl4mfc8.asp#pageclasses">WTL=20
        Property Page Classes</A>=20
        <UL>
          <LI><A=20
          =
href=3D"http://www.codeproject.com/wtl/wtl4mfc8.asp#pagewinmethods">CProp=
ertyPageWindow=20
          methods</A>=20
          <LI><A=20
          =
href=3D"http://www.codeproject.com/wtl/wtl4mfc8.asp#pageimplmethods">CPro=
pertyPageImpl=20
          methods</A>=20
          <LI><A=20
          =
href=3D"http://www.codeproject.com/wtl/wtl4mfc8.asp#handlingnotify">Handl=
ing=20
          notification messages</A> </LI></UL>
        <LI><A=20
        =
href=3D"http://www.codeproject.com/wtl/wtl4mfc8.asp#creatingsheet">Creati=
ng=20
        a Property Sheet</A>=20
        <UL>
          <LI><A=20
          =
href=3D"http://www.codeproject.com/wtl/wtl4mfc8.asp#simplesheet">The=20
          simplest property sheet, ever</A>=20
          <LI><A=20
          =
href=3D"http://www.codeproject.com/wtl/wtl4mfc8.asp#usefulpage">Creating =

          a useful property page</A>=20
          <LI><A=20
          =
href=3D"http://www.codeproject.com/wtl/wtl4mfc8.asp#bettersheet">Creating=
=20
          a better property sheet class</A> </LI></UL>
        <LI><A=20
        =
href=3D"http://www.codeproject.com/wtl/wtl4mfc8.asp#createwiz">Creating =
a=20
        Wizard</A>=20
        <UL>
          <LI><A=20
          =
href=3D"http://www.codeproject.com/wtl/wtl4mfc8.asp#morepages">Adding=20
          More Pages, Handling DDV</A> </LI></UL>
        <LI><A =
href=3D"http://www.codeproject.com/wtl/wtl4mfc8.asp#otherui">Other=20
        UI Considerations</A>=20
        <UL>
          <LI><A=20
          =
href=3D"http://www.codeproject.com/wtl/wtl4mfc8.asp#centersheet">Centerin=
g=20
          a sheet</A>=20
          <LI><A=20
          =
href=3D"http://www.codeproject.com/wtl/wtl4mfc8.asp#addicons">Adding=20
          icons to pages</A> </LI></UL>
        <LI><A =
href=3D"http://www.codeproject.com/wtl/wtl4mfc8.asp#upnext">Up=20
        Next</A>=20
        <LI><A=20
        =
href=3D"http://www.codeproject.com/wtl/wtl4mfc8.asp#revisionhistory">Revi=
sion=20
        History</A> </LI></UL>
      <H2><A name=3Dintro></A>Introduction</H2>
      <P>Property sheets have been a popular way of presenting options, =
even=20
      before Windows 95 introduced the sheet as a common control. =
Wizards are=20
      often used to guide users through installing software or other =
complex=20
      tasks. WTL provides good support for creating both of these types =
property=20
      sheets, and lets you use all of the dialog-related features that =
we've=20
      covered earlier, like DDX and DDV. In this article, I'll =
demonstrate=20
      creating a basic property sheet and a wizard, and how to handle =
events and=20
      notification messages sent by the sheet.</P>
      <H2><A name=3Dsheetclasses></A>WTL Property Sheet Classes</H2>
      <P>There are two classes that combine to implement a property =
sheet,=20
      <CODE>CPropertySheetWindow</CODE> and =
<CODE>CPropertySheetImpl</CODE>.=20
      Both are defined in the atldlgs.h header file.=20
      <CODE>CPropertySheetWindow</CODE> is a window interface class =
(that is, it=20
      derives from <CODE>CWindow</CODE>), and =
<CODE>CPropertySheetImpl</CODE>=20
      has a message map and actually implements the window. This is =
similar to=20
      the basic ATL windowing classes, where <CODE>CWindow</CODE> and=20
      <CODE>CWindowImpl</CODE> are used together.</P>
      <P><CODE>CPropertySheetWindow</CODE> contains wrappers for the =
various=20
      <CODE>PSM_*</CODE> messages, such as =
<CODE>SetActivePageByID()</CODE>=20
      which wraps <CODE>PSM_SETCURSELID</CODE>. =
<CODE>CPropertySheetImpl</CODE>=20
      manages a <CODE>PROPSHEETHEADER</CODE> struct and an array of=20
      <CODE>HPROPSHEETPAGE</CODE>s. <CODE>CPropertySheetImpl</CODE> also =
has=20
      methods for setting some <CODE>PROPSHEETHEADER</CODE> fields, and =
adding=20
      and removing pages. You can access the =
<CODE>PROPSHEETHEADER</CODE>=20
      directly by accessing the <CODE>m_psh</CODE> member variable.</P>
      <P>Finally, <CODE>CPropertySheet</CODE> is a specialization of=20
      <CODE>CPropertySheetImpl</CODE> that you can use if you don't need =
to=20
      customize the sheet at all.</P>
      <H3><A name=3Dsheetmethods></A>CPropertySheetImpl methods</H3>
      <P>Here are some of the important methods of=20