blocks|key|398620|text|我假设您的意思是，在执行长时间运行的操作时，GUI不会重新绘制自身。(从Vista开始实际上应该不那么明显，但我离题了)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|398621|如果长时间运行的操作由几个步骤或紧密循环组成，那么可以偶尔调用DoEvents，使表单即使在执行工作时也能保持一定程度的响应性。|offset|length|style|CODE|398622|另一种选择是将您的长时间运行的工作迁移到单独的线程中，但最后我认为，这在VB6中并不是微不足道或容易实现的。|398623|entityMap^0|0|V|8|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|K|$]]

I assume you mean that the GUI won't redraw itself when executing a long-running operation. (Shouldn't actually be that visible starting with Vista, but I digress).

If your long-running operation is composed of several steps or tight loops, then you can sprinkle a call to <code>DoEvents</code> every once in a while to cause the form to remain somewhat responsive even when doing work.

Another option would be to migrate your long-running work into a separate thread but last I looked this wasn't exactly trivial or easily possible in VB6.

blocks|key|264041|text|你应该在单独的线程中处理数据库，任何耗时的操作也应该在单独的线程中运行。在这种情况下，您的用户界面不会被冻结。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|264042|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

You should work with data base in separate thread, and any time-consuming operation should be run in a separate thread too. In this case your user interface won't be frozen.

blocks|key|1697178|text|这实际上和你的"How+to+exit+the+program+immediately“问题是同一个问题。在这两种情况下，问题都是数据库操作阻塞了VB6程序的执行。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1697179|1697180|另一个问题的answer+you+accepted+-使用ADO异步执行操作-也将解决这个空白屏幕问题。或者，如果您愿意，也可以遵循我在my+answer+to+your+other+question中的一个建议，并通过像this.|unordered-list-item|1697181|Or这样的互操作使用.NET后台工作程序组件，遵循我的其他建议，将数据库工作委托给ActiveX+exe+like+this。编辑AngryHacker的nice+answer此问题使用此方法。|1697182|1697183|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/1264513/how-to-exit-the-program-immediately|1|https://stackoverflow.com/questions/1264513/how-to-exit-the-program-immediately/1266539#1266539|2|https://stackoverflow.com/questions/1264513/how-to-exit-the-program-immediately/1265586#1265586|3|http://msdn.microsoft.com/en-us/library/aa719109.aspx|4|https://stackoverflow.com/questions/727386/making-a-c-kill-event-for-a-vb6-app/752841#752841|5|https://stackoverflow.com/questions/1560998/how-to-avoid-the-white-blank-screen/1562399#1562399^0|8|Z|0|0|0|6|J|1|1W|W|2|33|4|3|0|1H|9|4|25|B|5|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@$A|13|B|14|1|15]]|C|$]]|$1|D|3|-4|5|6|7|16|8|@]|9|@]|C|$]]|$1|E|3|F|5|G|7|17|8|@]|9|@$A|18|B|19|1|1A]|$A|1B|B|1C|1|1D]|$A|1E|B|1F|1|1G]]|C|$]]|$1|H|3|I|5|G|7|1H|8|@]|9|@$A|1I|B|1J|1|1K]|$A|1L|B|1M|1|1N]]|C|$]]|$1|J|3|-4|5|6|7|1O|8|@]|9|@]|C|$]]|$1|K|3|-4|5|6|7|1P|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]|S|$5|N|O|P|C|$Q|T]]|U|$5|N|O|P|C|$Q|V]]|W|$5|N|O|P|C|$Q|X]]|Y|$5|N|O|P|C|$Q|Z]]|10|$5|N|O|P|C|$Q|11]]]]

This is actually the same problem as your "<a href="https://stackoverflow.com/questions/1264513/how-to-exit-the-program-immediately">How to exit the program immediately</a>" question. In both cases, the problem is that your database operation is blocking the VB6 program from executing. 

<ul>
<li>The <a href="https://stackoverflow.com/questions/1264513/how-to-exit-the-program-immediately/1266539#1266539">answer you accepted</a> for the other question - use ADO to carry out the operations asynchronously - will also solve this blank screen problem. </li>
<li>Or if you prefer, follow one of my suggestions in <a href="https://stackoverflow.com/questions/1264513/how-to-exit-the-program-immediately/1265586#1265586">my answer to your other question</a> and use a .NET background worker component through Interop like <a href="http://msdn.microsoft.com/en-us/library/aa719109.aspx" rel="nofollow noreferrer">this</a>.</li>
<li>Or follow my other suggestion and delegate the database work to an ActiveX exe <a href="https://stackoverflow.com/questions/727386/making-a-c-kill-event-for-a-vb6-app/752841#752841">like this</a>. EDIT AngryHacker's <a href="https://stackoverflow.com/questions/1560998/how-to-avoid-the-white-blank-screen/1562399#1562399">nice answer</a> to this question uses this method.</li>
</ul>

blocks|key|1670803|text|我发布这篇文章是为了回答另一个问题，但这个模式在这里也适用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1670804|VB6本身是单线程的。但是，您可以通过使用在自己的进程中运行的VB6EXE使其有点多线程，但仍然与原始的ActiveX创建的EXE相关联。|1670805|我过去使用的是Timer对象和一个ActiveX可执行文件。这种方法将使您能够在一个地方本地化所有下载逻辑，像控制常规对象一样控制它，并让它在单独的EXE中运行，从而在默认情况下使其成为多线程的。|1670806|所以它的工作方式是这样的：|1670807|在LongRunningOperation方法中调用ActiveX+EXE对象上的LongRunningOperation方法时，将实例化计时器并使其几乎立即启动。您退出了LongRunningOperation方法，从而将控制权交还给调用它的实体。然后通过事件(例如LongRunningOperationProgress或LongRunningOperationComplete等)与主应用程序通信。|1670808|我推荐Timer+object+from+Karl+Petersen。|offset|length|1670809|entityMap|0|LINK|mutability|MUTABLE|url|http://ccrp.mvps.org/index.html?controls/ccrptimer6.htm^0|0|0|0|0|0|3|V|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|W|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|X|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|Y|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|Z|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|10|8|@]|9|@$L|11|M|12|1|13]]|A|$]]|$1|N|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|O|$P|$5|Q|R|S|A|$T|U]]]]

I posted this as an answer to another question, but the pattern applies here as well:

VB6, on its own, is single threaded. However, you can make it somewhat multithreaded via the use of ActiveX EXE that run in their own process, yet still are tethered to the original VB6-created EXE.

What I've used in the past is the Timer object in conjunction with an ActiveX EXE. This approach will give you an ability to localize all the downloading logic in one place, control it like you control a regular object and have it run in a separate EXE, thus by default making it multi-threaded.

So the way this works is like so:

You call the LongRunningOperation method on the ActiveX EXE object
In the LongRunningOperation method, you instantiate the Timer and have it kick off almost immediately.
You get out of the LongRunningOperation method, thus giving control back to the entity that called it.
Then you communicate back to the main app via Events (e.g. LongRunningOperationProgress or LongRunningOperationComplete, etc...)

I recommend the <a href="http://ccrp.mvps.org/index.html?controls/ccrptimer6.htm" rel="nofollow noreferrer">Timer object from Karl Petersen</a>.

blocks|key|398602|text|您的第一反应应该是将资源密集型操作放在单独的线程中。这在VB6中有点困难，但如果您调用本机CreateThread应用编程接口，则可能(但不推荐)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|398603|您还可以迁移到VB.NET，并在本地使用线程对象。|398604|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Your first instinct should be to put your resource-intensive operations in a separate thread. This is a bit difficult in VB6, although possible (but not recommended) if you invoke the native CreateThread API.

You can also migrate to VB.NET, and use Thread objects natively.

Using VB6

At the time of executing, it showing white blank screen while it was working with database, 
How to avoid the white blank screen in VB6.

WHITE BLANK SCREEN MEANS HANGING (WHEN IT WAS WORKING WITH DATABASE).

How to avoid that?

How to avoid the White Blank Screen?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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使用VB6在执行时，在操作数据库时会出现白屏，如何避免在VB6中出现白屏。白色空白屏幕表示挂起(当IT正在处理数据库时)。如何避免这种情况？

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