📄 read.cgi-read=9981.htm

📁 mfc资料集合5
💻 HTM
字号:
<HTML><HEAD><TITLE>Q: How to ensure only one instance of window in a DLL</TITLE>
</HEAD><BODY background="../fancyhome/back.gif" tppabs="http://www.codeguru.com/fancyhome/back.gif" bgcolor="#FFFFFF">
 <table WIDTH="100%"> <tr WIDTH="100%"> <td><table>
		<tr><td><img src="../mfc_sourcebook.jpg" tppabs="http://www.codeguru.com/mfc_sourcebook.jpg" 
		ALT="MFC Programmer's SourceBook" WIDTH="256" 
		HEIGHT="88"><td></tr>
		<tr><td valign="bottom"><font SIZE="+1" 
		color="#a0a0ff"><b>Discussion Board</b></font></td></tr>
		</table></td> <td width="40"></td>
		<td  align="right" valign="top"><A HREF="http://209.66.99.126/cgi/ads.cgi?advert=genitor"><IMG SRC="../banners/genitor.gif" tppabs="http://www.codeguru.com/banners/genitor.gif" HEIGHT=60 WIDTH=468 ALT="Genitor - award-winning Object Construction Suite for C/C++ development, documentation, and maintainance" BORDER=2></A><BR><SMALL><A HREF="http://209.66.99.126/cgi/ads.cgi?advert=genitor">Click here to get a trail copy of Genitor V3.1</A></SMALL><td> </tr> </table> <hr><P ALIGN=CENTER>[ <A HREF="#Responses">Read Responses</A> | <A HREF="#PostResponse">Post a New Response</A> | <A HREF="index.cgi.htm" tppabs="http://www.codeguru.com/mfc_bbs/index.cgi">Return to the Index</A> ]
<A HREF="read.cgi-read=10044.htm" tppabs="http://www.codeguru.com/mfc_bbs/read.cgi?read=10044">Next in Thread</A><P ALIGN=CENTER><BIG><BIG><BIG><STRONG>Q: How to ensure only one instance of window in a DLL</STRONG></BIG></BIG></BIG>
<P ALIGN=CENTER><EM>Posted by <STRONG><A HREF="mailto:markj@microdisc.com">Mark Jarvis</A></STRONG> on <STRONG>4/21/98 12:22p.m.</STRONG></EM></P>
<!-- REMOTE_HOST: 12.68.48.73; REMOTE_ADDR: 12.68.48.73-->
<P>Hi:
<P>I have a DLL that essentially creates an SDI window when loaded.  The DLL is called from an application (Optimas 6.2) that has its own macro language.  One of the macro commands is used to &quot;Register&quot; function calls from DLLs.  I have 3 functions that I am registering, and wind up with three SDI windows.  Is there a way to prevent the MyApp::InitInstance() function from executing if the DLL has already been loaded?
<P>I have attempted registering the class and looking for it, but have had no success...  Probably OE.
<P>Thank you,
<P>Mark
</P>
<A NAME="Responses"><HR></A><P ALIGN=CENTER><BIG><BIG><STRONG>Responses</STRONG></BIG></BIG>
<P><UL><LI><STRONG><A HREF="read.cgi-read=10044.htm" tppabs="http://www.codeguru.com/mfc_bbs/read.cgi?read=10044">Re: Q: How to ensure only one instance of window in a DLL</A></STRONG> : J黵gen Kraus -- <EM>4/22/98 3:52a.m.</EM>
<UL>
<LI><STRONG><A HREF="read.cgi-read=10056.htm" tppabs="http://www.codeguru.com/mfc_bbs/read.cgi?read=10056">Thank You</A></STRONG> : Mark Jarvis -- <EM>4/22/98 4:50a.m.</EM>
<UL>
</UL>
</UL>
</UL></P>
<A NAME="PostResponse"><HR></A><P ALIGN=CENTER><BIG><BIG><STRONG>Post a New Response</STRONG></BIG></BIG>
<P><FORM METHOD=POST ACTION="http://www.codeguru.com/mfc_bbs/index.cgi?post">
<INPUT TYPE=HIDDEN NAME="followup" VALUE="9981">
<P><CENTER><TABLE><TR>
<TD ALIGN=RIGHT><P><STRONG>Your Name:</STRONG></TD><TD><INPUT TYPE=TEXT NAME="name" SIZE=40></TD></TR><TR>
<TD ALIGN=RIGHT><P><STRONG>E-Mail Address:</STRONG></TD><TD><INPUT TYPE=TEXT NAME="email" SIZE=40></TD></TR><TR>
<TD ALIGN=RIGHT><P><STRONG>Subject:</STRONG></TD><TD><INPUT TYPE=TEXT NAME="subject" SIZE=40 VALUE="Re: Q: How to ensure only one instance of window in a DLL"></TD></TR><TR>
<TD COLSPAN=2 ALIGN=CENTER><P><STRONG>Message:</STRONG><BR><TEXTAREA COLS=80 ROWS=15 NAME="body" WRAP=PHYSICAL>
</TEXTAREA></TD></TR><TR>
<TD COLSPAN=2 ALIGN=CENTER><HR WIDTH=50%><P><SMALL>If you'd like to include a link to another page with your message,<BR>please provide both the URL address and the title of the page:</SMALL></TD></TR><TR>
<TD ALIGN=RIGHT><P><STRONG>Optional Link URL:</STRONG></TD><TD><INPUT TYPE=TEXT NAME="url" SIZE=40 VALUE="http://"></TD></TR><TR>
<TD ALIGN=RIGHT><P><STRONG>Optional Link Title:</STRONG></TD><TD><INPUT TYPE=TEXT NAME="url_title" SIZE=40></TD></TR><TR>
<TD COLSPAN=2 ALIGN=CENTER><HR WIDTH=50%><P><SMALL>If you'd like to include an image (picture) with your message,<BR>please provide the URL address of the image file:</SMALL></TD></TR><TR>
<TD ALIGN=RIGHT><P><STRONG>Optional Image URL:</STRONG></TD><TD><INPUT TYPE=TEXT NAME="imageurl" SIZE=40 VALUE="http://"></TD></TR><TR>
<TD COLSPAN=2 ALIGN=CENTER><HR WIDTH=50%><P><SMALL>If you'd like e-mail notification of responses, please check this box:</SMALL> <INPUT TYPE=CHECKBOX NAME="wantnotice" CHECKED VALUE="yes"></TD></TR><TR>
<TH COLSPAN=2><HR WIDTH=50%><P><INPUT TYPE=SUBMIT NAME="Preview" VALUE="Preview Message"> <INPUT TYPE=SUBMIT NAME="Post" VALUE="Post Message"></TH></TR></TABLE></CENTER></P></FORM>
<HR><P ALIGN=CENTER><SMALL>The MFC Discussion Board is maintained with <STRONG><A HREF="http://awsd.com/scripts/webbbs/">WebBBS 2.24</A></STRONG>.</SMALL></P>
</BODY></HTML>
⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -