另外一种实现平面工具栏的方.htm

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   dc.bitblt(rc.left+1, rc.top+1, rc.width(), rc.height(), &ddc, 0, 0, 0x00e20746l);
   dc.selectobject(&brshadow);
   dc.bitblt(rc.left, rc.top, rc.width(), rc.height(), &ddc, 0, 0, 0x00e20746l);
	</pre>
    </dd>
    <dd><pre>   // reset dcs
   dc.selectobject(poldbrush);
   ddc.selectobject(poldbmp);
   ddc.deletedc();</pre>
    </dd>
    <dd><pre>   bmp.deleteobject();
}
</pre>
    </dd>
    <dd><pre>void ctoolbarex :: drawseparator( cdc &amp; dc, crect &amp; rc ) const {
    bool bhorz = ((m_dwstyle &amp; cbrs_orient_horz) != 0) ? true : false;
   // make sure, this separator is not a placeholder for
   // another control.
   if( rc.width() &lt;= 8 ) {
      if( bhorz ) {
         // draw the separator bar in the middle
         int x = (rc.left + rc.right) / 2;
         rc.left = x-1; rc.right = x+1;
         dc.draw3drect(
            rc,
            m_clrbtnshadow,
            m_clrbtnhilight
         );
      } else {
         // draw the separator bar in the middle
         rc.left = rc.left - m_sizebutton.cx;
         rc.right = rc.left + m_sizebutton.cx;
         rc.top = rc.bottom+1;
         rc.bottom = rc.top+3;
         int y = (rc.top+rc.bottom)/2;
         rc.top = y-1; rc.bottom = y+1;
         dc.draw3drect(
            rc,
            m_clrbtnshadow,
            m_clrbtnhilight
         );
      }
   }
}
</pre>
    </dd>
    <dd><pre>void ctoolbarex :: drawgripper( cdc &amp; dc ) const { 
    if( m_dwstyle &amp; cbrs_floating )
      return;      // no gripper if floating</pre>
    </dd>
    <dd><pre>   crect gripper;
   getwindowrect(gripper);
   screentoclient(gripper);
   gripper.offsetrect(-gripper.left, -gripper.top);</pre>
    </dd>
    <dd><pre>   if( m_dwstyle &amp; cbrs_orient_horz ) {
      // gripper at left
      gripper.deflaterect(4, 4);
      gripper.right = gripper.left+3;
        dc.draw3drect(
         gripper,
         m_clrbtnhilight,
            m_clrbtnshadow
      );
      gripper.offsetrect(3, 0);
        dc.draw3drect(
         gripper,
         m_clrbtnhilight,
            m_clrbtnshadow
      );
   } else {
      // gripper at top
      gripper.deflaterect(4, 4);
      gripper.bottom = gripper.top+3;
      dc.draw3drect(
         gripper,
         m_clrbtnhilight,
            m_clrbtnshadow
      );
      gripper.offsetrect(0, 3);
        dc.draw3drect(
         gripper,
         m_clrbtnhilight,
            m_clrbtnshadow
      );
   }
}</pre>
    </dd>
    <dd><pre>void ctoolbarex :: onupdatecmdui( cframewnd* ptarget, bool bdisableifnohndler ) {
   if( m_bflatlook ) {
      // save current styles
      register const int nbtn = gettoolbarctrl().getbuttoncount();
      register int nidx;
      for( nidx = 0; nidx &lt; nbtn; ++nidx )
         m_styles.setatgrow(nidx, getbuttonstyle(nidx));</pre>
    </dd>
    <dd><pre>      // do base class processing
      ctoolbar::onupdatecmdui(ptarget,bdisableifnohndler);</pre>
    </dd>
    <dd><pre>      //check wether styles have been changed
      for( nidx = 0; nidx &lt; nbtn; ++nidx ) {
         if( m_styles[nidx] != getbuttonstyle(nidx) ) {
            // invalidate that button
            crect rc;
            getitemrect(nidx, rc);
            invalidaterect(rc);
         }
      }
   } else
      // simply delegate
      ctoolbar::onupdatecmdui(ptarget,bdisableifnohndler);
}</pre>
    </dd>
    <dd><pre>void ctoolbarex::onsyscolorchange() 
{
   ctoolbar::onsyscolorchange();</pre>
    </dd>
    <dd><pre>   m_clrbtnface    = ::getsyscolor(color_btnface);
   m_clrbtnhilight = ::getsyscolor(color_btnhilight);
   m_clrbtnshadow  = ::getsyscolor(color_btnshadow);
}
</pre>
    </dd>
    <dd><pre>void ctoolbarex::onnccalcsize(bool bcalcvalidrects, nccalcsize_params far* lpncsp) 
{
   ctoolbar::onnccalcsize(bcalcvalidrects, lpncsp);
   // adjust non-client area for gripper at left or top
   if( m_dwstyle &amp; cbrs_orient_horz ) {
      lpncsp-&gt;rgrc[0].left += 4;
      lpncsp-&gt;rgrc[0].right += 4;
   } else {
      lpncsp-&gt;rgrc[0].top += 6;
      lpncsp-&gt;rgrc[0].bottom += 6;
   }
}
</pre>
    </dd>
    <dd><pre>void ctoolbarex::onmousemove(uint nflags, cpoint point) 
{
   if( m_bflatlook ) {
      register const int nbtn = gettoolbarctrl().getbuttoncount();
      const int nlastbtn = m_nlastbtn;
      m_nlastbtn = -1;</pre>
    </dd>
    <dd><pre>      for( register int i = 0 ; i &lt; nbtn ; ++i ) {
         crect rc;
         getitemrect(i, rc);</pre>
    </dd>
    <dd><pre>         const bool bbtnenabled = gettoolbarctrl().isbuttonenabled(int(getitemid(i)));
         const bool bsep = getbuttonstyle(i) &amp; tbbs_separator;</pre>
    </dd>
    <dd><pre>         if( bsep || ! bbtnenabled )
            continue;</pre>
    </dd>
    <dd><pre>         const bool bhascursor = rc.ptinrect(point);</pre>
    </dd>
    <dd><pre>         if( bhascursor &amp;&amp; bbtnenabled ) {
            if( nlastbtn != i ) {
               // force a repaint of the button with the cursor on it
               invalidaterect(rc, false);
            }
            m_nlastbtn = i;
         } else if( !bhascursor &amp;&amp; i == nlastbtn ) {
            // force a repaint of the last formed button
            invalidaterect(rc, false);
         }
      }
      // one problem occures with wm_mousemove: we cannot detect
      // that the mouse leaves the window. if the mouse moves quick
      // enough, then the last formed button stays visible. to
      // resolve this problem, we set a timer and check, wether
      // the mouse is outside the window ...
      killtimer(m_utimerevent);
      m_utimerevent = settimer(1, 250, 0);
   }
   ctoolbar::onmousemove(nflags, point);
}
</pre>
    </dd>
    <dd><pre>void ctoolbarex::onncpaint() 
{
   if( m_bflatlook ) {
      ctoolbar::erasenonclient();
      cwindowdc dc(this);
      drawgripper(dc);
   } else
      ctoolbar::onncpaint();
}</pre>
    </dd>
    <dd><pre>void ctoolbarex::ontimer(uint nidevent) 
{
   if( nidevent == m_utimerevent &amp;&amp; m_nlastbtn &gt;= 0 ) {
      point pt;
      ::getcursorpos(&amp;pt);
      crect rc;
      getwindowrect(rc);
      if( ! rc.ptinrect(pt) ) {
         getitemrect(m_nlastbtn, rc);
         invalidaterect(rc, false);
         m_nlastbtn = -1;
         killtimer(nidevent);
      }
   } else
      ctoolbar::ontimer(nidevent);
}</pre>
    </dd>
    <dd><pre>int ctoolbarex::oncreate(lpcreatestruct lpcreatestruct) 
{
   if (ctoolbar::oncreate(lpcreatestruct) == -1)
      return -1;
	</pre>
    </dd>
    <dd><pre>   // save the parent at creation time. it may change, if
   // the toolbar is floating; but we want to know of the
   // &quot;real&quot; parent (for notification messages)!
   m_hwndparent = lpcreatestruct-&gt;hwndparent;
	</pre>
    </dd>
    <dd><pre>   return 0;
}</pre>
    </dd>
    <dd><pre>#define padwidth(x)   (((x)*8+31)&amp;~31)/8
</pre>
    </dd>
    <dd><pre>himagelist ctoolbarex :: getimagelist() {
   m_bdeleteimglist = false;</pre>
    </dd>
    <dd><pre>   himagelist himg = himagelist(sendmessage(tb_getimagelist));</pre>
    </dd>
    <dd><pre>#ifdef _debug
   if( himg == 0 ) {
      trace0(&quot;ctoolbarex::onpaint(): could not get image list\n&quot;);
   }
#endif</pre>
    </dd>
    <dd><pre>   if( ! himg ) {
      // comctl32.dll version prior to 4.70 doesn't know
      // anything of the tb_getimagelist message
      if( m_hbmimagewell != 0 ) {
         // yup - we have a valid image.
         // but beware: do not use this bitmap directly.
         // we make the copy by ourself. copyimage() (for
         // instace) produces inacceptable copies under
         // some circumstances ...
         cimagelist imglist;
         cbitmap bmp;
      	</pre>
    </dd>
    <dd><pre>         // retrieve the size of the bitmap
         bitmap bmhdr;
         ::getobject(m_hbmimagewell, sizeof(bitmap), &amp;bmhdr);
      	</pre>
    </dd>
    <dd><pre>         dword dwwidth, dwheight = bmhdr.bmheight;
      	</pre>
    </dd>
    <dd><pre>         if (bmhdr.bmbitspixel &gt; 8)
            dwwidth = padwidth(bmhdr.bmwidth * 3);
         else
            dwwidth = padwidth(bmhdr.bmwidth);
      	</pre>
    </dd>
    <dd><pre>         // copy the bitmap
         cclientdc cdc(this);
         cdc dc1, dc2;
         dc1.createcompatibledc(&amp;cdc);
         dc2.createcompatibledc(&amp;cdc);
         bmp.createcompatiblebitmap(&amp;cdc, dwwidth, dwheight);
         cbitmap * pobmp = dc1.selectobject(&amp;bmp);
         hgdiobj hoobj = ::selectobject(dc2.getsafehdc(), m_hbmimagewell);
         dc1.bitblt(0,0,dwwidth,dwheight,&amp;dc2,0,0,srccopy);
         ::selectobject(dc2.getsafehdc(), hoobj);
         dc1.selectobject(pobmp);
         dc1.deletedc();
         dc2.deletedc();</pre>
    </dd>
    <dd><pre>         imglist.create(m_sizeimage.cx, m_sizeimage.cy,true,dwwidth/m_sizeimage.cx,1);
         imglist.setbkcolor(m_clrbtnface);
         imglist.add(&amp;bmp,m_clrbtnface);
         himg = imglist.detach();
         bmp.deleteobject();
         m_bdeleteimglist = true;
      }
   }</pre>
    </dd>
    <dd><pre>   return himg;
}</pre>
    </dd>
  </dl>
  <p style="margin-left: 5; padding-left: 5">在mfc应用程序中使用 ctoolbarex，你必须完成下面的步骤(假定你使用的是appwizard/classwizard): 
  </p>
  <blockquote>
    <p style="margin-left: 5; padding-left: 5">1. <font color="#993300">在</font> stdafx.h 
    或 mainfrm.h<font color="#993300"> 中包含 #include &quot;toolbarex.h&quot;</font><tt><font
    color="#990000">&nbsp;<br>
    </font></tt>2. 把 cmainframe::m_wndtoolbar 的类型&nbsp;从&nbsp; ctoolbar 变成 
    ctoolbarex </p>
  </blockquote>
  <p style="margin-left: 5; padding-left: 5">&nbsp;&nbsp;&nbsp; 类 ctoolbarex 
  提供了下面的共用方法 ( 另外还有它的 ancestor 类 ): <dl>
    <dd><pre style="margin-left: 5; padding-left: 5"><tt><font color="#990000">// set the mode of the toolbar. the mode changes immediately
// on the screen.
void setflatlook( bool bflat = true );

// determine wether the current mode is &quot;flat&quot;
bool isflatlook() const;

// this function i've personally missed in ctoolbar
// for more than one time ...
void getsizes( csize &amp; sizebutton, csize &amp; sizeimage ) const;

// get the window to which the toolbar initially was docked. this
// is not necessarily the window returned by cwnd::getparent() or
// ccontrolbar::getdockingframe(). both these functions don't
// return the expected window, if the toolbar is floating ...
cwnd * getparentframe() const;
</font></tt></pre>
    </dd>
  </dl>
  <p style="margin-left: 5; padding-left: 5">&nbsp;&nbsp;&nbsp; 
  该代码更新和增强了：</p>
  <blockquote>
    <ul>
      <p>文本按钮可以工作了。</p>
      <p>gripper改进后更象office97的了。</p>
      <p>被禁止的图像更具有浮雕的效果。</p>
      <p>分隔线只有在没有设置wrap时才绘制。</p>
    </ul>
  </blockquote>
</blockquote>

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