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In a simple MDI application, I tired to override CChildFrame::PreTranslateMessage to pre-process some events or just drop them if meet some condition. However, I found that all events were received...

@OReubens
thx, I didn't realize how performance test is supposed to be so sophisticated. I'll try further test.

@olivthill2
Caching a table of widths of characters didn't include inter-spacing and others like what @OReubens said. But it would be a simple way and probably fit for many cases.

You all...

I wrote a simple demo below to discover why GetTextExtentPoint32 is slow,



void CSmartGetTextExtentDlg::OnBnClickedButton1()
{
// TODO: Add your control notification handler code here
...

I did set WS_CLIPCHILDDREN, not really helped.

Actually I don't care how many WM_PAINT was sent there, WM_PAINT is lowest priority message and is supposed to be combined by system.

Now I got...

To simplify scrolling operation, I built my own CScrollableWnd, which acted just as a container window, and took advantage of this CScrollHelper...

You are correct. I know that's expected behavior.
However, what I'd like to do is to handle mouse & kb messages before they get dispatched to target window and optionally determine if they should...

Here’s my code sample,



BOOL XBaseWindow::PreTranslateMessage(MSG* pMsg)
{
// TODO: Add your specialized code here and/or call the base class
switch (pMsg->message)
{
case...

I've read this post, "Destroying Window Objects"
http://msdn.microsoft.com/en-us/library/5zba4hah.aspx

But that got me more confused.

As it said, if I add auto-cleanup to my own CWnd-derived...

So PreTranslateMessage for app class gets higher priority than which for each CWnd, right?
Suppose that I write a PreTranslateMessage for app class and a PreTranslateMessage for one CWnd, they will...

My intention is to intercept some messages and to determine if it should be dispatched to window.
Then I chose PreTranslateMessage.

Still I'm a little suspicious if I got it right,
1. does...

The cost required to change my application to multi-thread mode.



Sure. Essentially, running my event loop in OnIdle was really bad design.

Now, I must think about refactor app structure as...

OnIdle gets its returned value, from MSDN,


That's the reason why I have to wake up main thread.

I can't return TRUE all the time, that made 100% CPU.

On the other side, running my own loop...

Hi Alex_F,

My point is that after my main thread sent a http request and then it went into suspended state, since there's no any input event, next, when http thread notified main thread via an...

Briefly, my application contains a main UI thread, and an internal event loop. I overrode CWinApp::OnIdle to run my own event loop, it looks like,



BOOL CMyApp::OnIdle(LONG lCount)
{
//...

thanks Lindley and treuss, a hash algorithm may be what I'm looking for...

I mean that convert a string to an int, which would be unique, different from other ints generated by different strings

thanks, but I didn't think that work for my case.

I mean "unique", that means the resulting integer should be unique from different strings, even from different character sequence.
I know it may...

I need to convert a string to a unique integer, and better it's thread safe. Is that possible? How to?

Thanks.

VC8. Any comment?

Sorry for so late reply. I already got a working MDI app. It works well so far.

Thanks JohnCz and all.

That's right, in any option, I should try further to manage all views, layout, msg handling, maybe still other things, override default framework functionality.

Thanks your lenthy reply.

Now I selected MDI architecture, since I do really need multiple frames, and further multiple views co-exsited under same frame (views coexist in some pattern). There's...

Not yet. There would be an external data source which I could read, parse and generate views accordingly, but I don't need to save them. I'm sure that won't be single-doc/multi-views relationship.
...

Thanks a lot.
For item 3, sure, I won't make my wheels all from scratch. If I need a custom editbox, I could have CEdit-derived control, but if there's no appropriate common control, I have to build...

I'm designing my app by using of MFC, I'm not quite familiar with MFC framework, my background is some Win32 and WinForms experience. Right here I got some designing issue, and I'm trying to get help...