subject_50364.htm

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序号：50364 发表者：圣诞小人 发表日期：2003-08-20 13:29:58
<br>主题：多个菜单（其id连续）一个响应函数如何实现？
<br>内容：譬如级联菜单&nbsp;&nbsp;排序-&gt;按类型(id=1001)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;按时间<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;按大小<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .(id=1010)<BR>如何用一个函数来响应？<BR>其消息影射如何写，<BR>响应函数如何写？
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<font color=red>答案被接受</font><br>回复者：BenDan 回复日期：2003-08-20 14:01:49
<br>内容：ON_COMMAND_RANGE<BR>Use this macro to map a contiguous range of command IDs to a single message handler function.<BR><BR>ON_COMMAND_RANGE(id1, id2, memberFxn )<BR>Parameters<BR>id1 <BR>Command ID at the beginning of a contiguous range of command IDs. <BR>id2 <BR>Command ID at the end of a contiguous range of command IDs. <BR>memberFxn <BR>The name of the message-handler function to which the commands are mapped. <BR>Remarks<BR>The range of IDs starts with id1 and ends with id2. <BR><BR>Use ON_COMMAND_RANGE to map a range of command IDs to one member function. Use ON_COMMAND to map a single command to a member function. Only one message-map entry can match a given command ID. That is, you can't map a command to more than one handler. For more information on mapping message ranges, see Handlers for Message-Map Ranges.<BR><BR>There is no automatic support for message map ranges, so you must place the macro yourself.<BR><BR>Example<BR>// The code fragment below shows how to use ON_COMMAND_RANGE macro<BR>// to map a contiguous range of command IDs to a single message <BR>// handler function (i.e. OnFileMenuItems() is the sample below). In <BR>// addition, it also shows how to use CheckMenuRadioItem() to check a <BR>// selected menu item and makes it a radio item.<BR>BEGIN_MESSAGE_MAP(CMainFrame, CFrameWnd)<BR>&nbsp;&nbsp; // ... <BR>&nbsp;&nbsp; ON_COMMAND_RANGE(ID_FILE_MENUITEM1, ID_FILE_MENUITEM3, OnFileMenuItems)<BR>END_MESSAGE_MAP()<BR><BR>void CMainFrame::OnFileMenuItems(UINT nID)<BR>{<BR>&nbsp;&nbsp; CMenu* mmenu = GetMenu();<BR>&nbsp;&nbsp; CMenu* submenu = mmenu-&gt;GetSubMenu(0);<BR>&nbsp;&nbsp; submenu-&gt;CheckMenuRadioItem(ID_FILE_MENUITEM1, ID_FILE_MENUITEM3, <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;nID, MF_BYCOMMAND);<BR>}<BR><BR>
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回复者：圣诞小人 回复日期：2003-08-20 15:33:08
<br>内容：我照您的方法做了，编译没问题，<BR>但是运行时是灰的，<BR>问题在哪里？
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回复者：圣诞小人 回复日期：2003-08-30 08:51:09
<br>内容：原来是焦点的缘故
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