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What are the basic rules and idioms for operator overloading?
...ilt-in types and user-defined types. To the former belong for example int, char, and double; to the latter belong all struct, class, union, and enum types, including those from the standard library, even though they are not, as such, defined by users.
2 This is covered in a later part of this FAQ.
3...
How do I make a JAR from a .java file?
... project in your IDE and put your Java files inside of the project folder.
Select the project in the IDE and export the project as a JAR. Double check that the appropriate java files are selected when exporting.
You can always do this all very easily with the command line. Make sure that you are i...
选中CListCtrl指定行并发送LVN_ITEMCHANGED消息 - C/C++ - 清泛网 - 专注C/C++及内核技术
...Report.EnsureVisible(nIndex,FALSE);
m_listReport.SetItemState(nIndex,LVIS_SELECTED,LVIS_SELECTED);
但这远远不能满足需要，因为这种定位不具有在指定行上面鼠标单击选中的效果，为此我们需要向CListCtrl控件发送LVN_ITEMCHANGED消息，LVN_ITEMCHANGED是C...
CGridCtrl 选中一行 - C/C++ - 清泛网 - 专注C/C++及内核技术
CGridCtrl 选中一行 选中单元格m_Grid.SetItemState(row,col,LVIS_SELECTED|LVIS_FOCUSED); 取消选中单元格m_Grid.SetItemState(row,col,LVIS_OVERLAYMASK);//选中单元格
m_Grid.SetItemState(row, col, LVIS_SELECTED | LVIS_FOCUSED);
//取消选中单元格
m_Grid.SetItemState(row, col...
MFC 菜单背景色设置（菜单重绘） - C/C++ - 清泛网 - 专注C/C++及内核技术
...)
{
case -2:
{
DrawTopMenu(m_dc,m_rect,m_str,(m_state&ODS_SELECTED)||(m_state&0x0040)); //0x0040 ==ODS_HOTLIGHT
// DrawItemText(m_dc,m_str,m_rect);
break;
}
case -1:
{
DrawItemText(m_dc,m_str,m_rect);
break;
}
case 0:
{
DrawSeparater(...
CListCtrl 如何设置单元格颜色？ - C/C++ - 清泛网 - 专注C/C++及内核技术
...、选择状态
m_ColListCtrl.SetItemState( int(m_IntItemStatePos), LVIS_SELECTED , LVIS_SELECTED|LVS_EX_FULLROWSELECT);
m_ColListCtrl.SetItemState( int(m_IntItemStatePos), LVIS_FOCUSED , LVIS_FOCUSED|LVS_EX_FULLROWSELECT);
最后附上整个源demo工程的源码：coloredlistctrl.zip
效...
CListCtrl 行高设置，自定义行高 - C/C++ - 清泛网 - 专注C/C++及内核技术
...mask = LVIF_STATE;//|LVIF_IMAGE;
lvi.stateMask = LVIS_FOCUSED | LVIS_SELECTED ;
lvi.iItem = lpMeasureItemStruct->itemID;
BOOL bGet = GetItem(&lvi);
//高亮显示
BOOL bHighlight =((lvi.state & LVIS_DROPHILITED)||((lvi.state & LVIS_SELECTED) &&
((GetFocus() == ...
解决：ORA-00054:资源正忙,要求指定NOWAIT - 数据库(内核) - 清泛网 - 专注...
...删除
1：找出所有被锁的对象，定位出哪个回话占用
select l.session_id,o.owner,o.object_name from v$locked_object l,dba_objects o where l.object_id=o.object_id
结果：
session_id owner object_name
158 SA TEST_1
...
对比想要创建的索引，定位哪些会话需要...
MongoDB仿关系型数据库Group聚合例子 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...系型数据库例子，通过BsonJavaScript脚本实现。相当的SQL：select * from GroupDemo a right join (select userName,max(date) maxdate from GroupDemo group by userName) b on a date=b maxdate
namespace MongoGroupDemo
{
class Program
{
private static string MongoConnStr...
闲扯Nginx的accept_mutex配置 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...相关的解释：
OS may wake all processes waiting on accept() and select(), this is called thundering herd problem. This is a problem if you have a lot of workers as in Apache (hundreds and more), but this insensible if you have just several workers as nginx usually has. Therefore turning acc...