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ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...eryInterface接口，来获得对应的正确的接口指针。
(1) 构造函数
第一个参数为智能接口指针的类型，第二个参数为 智能指针的接口ID。
CComPtr<IUnknown> punk;
下面三个例子完全相同
CComPtr<IXXX> pno;
CComPtr<IXXX,&__uuidof(IXXX)> pno;
CComPtr<I...
Fixing “Lock wait timeout exceeded; try restarting transaction” for a 'stuck" Mysql table?
... this problem: Sometimes the process that has locked the table shows up as sleeping in the processlist! I was tearing my hair out until I killed all the threads that were open in the database in question, sleeping or not. That finally unlocked the table and let the update query run. The commenter me...
C/C++中的段错误（Segmentation fault） - C/C++ - 清泛网 - 专注C/C++及内核技术
...ent fault 之所以能够流行于世，是与Glibc库中基本上所有的函数都默认形参指针为非空有着密切关系的。目录1。什么是段错误？2。为什 Segment fault 之所以能够流行于世，与Glibc库中基本上所有的函数都默认形参指针为非空有着密...
How can I make a .NET Windows Forms application that only runs in the System Tray?
... Or a bool bRunning = true; while(bRunning){Application.DoEvents(); Thread.Sleep(10);}. Then set bRunning = false; to exit the app.
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Remove and Replace Printed items [duplicate]
...ange (0,5):
b = "Loading" + "." * x
print (b, end="\r")
time.sleep(1)
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Asynchronous method call in Python?
...time() + 1.0) >= end_time:
break
yield from asyncio.sleep(1)
loop = asyncio.get_event_loop()
# Blocking call which returns when the display_date() coroutine is done
loop.run_until_complete(display_date(loop))
loop.close()
New async/await syntax:
async def display_date(loo...
How can I make the cursor turn to the wait cursor?
...ed = true;
}
Here's the code form the main form
private void btnSleep_Click(object sender, EventArgs e)
{
var control = sender as Control;
if (control != null)
{
Log.Info("Launching lengthy operation...");
CursorWait.LengthyOperation(con...
ListCtrl 重绘（Custom Draw） - C/C++ - 清泛网 - 专注C/C++及内核技术
...Windows会为你发送NM_CUSTOMDRAW消息，你只需要添加一个处理函数以便开始使用Custom draw。首先添加一个消息映射，象下面一样：
ON_NOTIFY ( NM_CUSTOMDRAW, IDC_MY_LIST, OnCustomdrawMyList )
处理函数的原形如下：
afx_msg void OnCustomdrawMyList ( NMH...
What is a daemon thread in Java?
...s) {
new WorkerThread().start();
try {
Thread.sleep(7500);
} catch (InterruptedException e) {
// handle here exception
}
System.out.println("Main Thread ending") ;
}
}
class WorkerThread extends Thread {
public WorkerTh...
What is the best way to ensure only one instance of a Bash script is running? [duplicate]
...ile, it will surely die, but processes fork()+exec()-ed from it (like your sleep did) inherit copies of open file descriptors along with flock() locks. Killing the script while sleep is sleeping won't unlock, because sleep process is still holding the lock. For lockable script it's important, becaus...