Re: Thread Interruption - C / C++ / MFC Discussion Boards

Re: Can I save resource in a .lib project and load it at runtime?

John R. Shaw25-Nov-03 16:27

25-Nov-03 16:27

I am not sure but I would think so, since the option of staticaly linking is available. If not, just create a DLL and staticaly link it.

INTP

Re: Can I save resource in a .lib project and load it at runtime?

Mike Dimmick26-Nov-03 3:34

Mike Dimmick

26-Nov-03 3:34

No, you can't. The LINK tool can only cope with a single RES file specified on the command line - it cannot combine RES files.

What I've done in this situation is to #include the .rc file accompanying the static library in the main executable/DLL's resource file. See View > Resource Includes in the VC 6 IDE.

Minimum WMI requirements for command prompt c++

krisp25-Nov-03 10:40

krisp

25-Nov-03 10:40

I only need to use a command prompt for my program and want to call a couple of WMI methods.

All the examples I see on the web use MFC and Windows Forms for showing how to use WMI.

A simple example would be to just call

Win32_WindowsProductActivation.SetProductKey( myKey );

and then close the app.

I just need a start on what I need to include and do to setup a simple call without using forms.

I am not that familiar with MFC Forms, only .Net Forms, but I do not want to have to install the .Net framework so I thought i would just write this in C++. Also, do not want to use VB Script.

Well, hopefully this is easy for someone to whip up an example for me.
Much appreciated.
Thanks.

Thread Interruption

suiram4025-Nov-03 8:26

suiram40

25-Nov-03 8:26

I write this 3D editor at

http://marius.homeunix.org:8000

I've moved the compilation process in a thread. ()
The thread has to update the progress bar of the Dialog-Bar
and the text in the static and report list box.
I'm sending WM_* messages to these windows.
Under Win2K work 100% OK but in Win 98 it hangs
in the SendMessage (dead lock). Any Ideeas
Thanks.

Re: Thread Interruption

igor196025-Nov-03 8:32

igor1960

25-Nov-03 8:32

Did you try using PostMessage?...

"...Ability to type is not enough to become a Programmer. Unless you type in VB. But then again you have to type really fast..."
Me

Re: Thread Interruption

suiram4025-Nov-03 8:45

suiram40

25-Nov-03 8:45

I have to send text to the static control

TCHAR someOutString;

_stprntf(someOutString,"Preogress is :%d%%",_percentage);
dlgbar.m_static.SendMessage(WM_SETTEXT,0,(LPCTSTR)someOutString);

If I do PostMessage I loose the LPARAM ... 'someOutString'.

I have installed VC 6 under 98 and I I get hang in user.dll

Thx

Re: Thread Interruption

igor196025-Nov-03 8:51

igor1960

25-Nov-03 8:51

>> I have to send text to the static control <<

So what? You may have different options, e.g:
1. Put your TCHAR someOutString as global variable acessed by both threads;
2. Allocate yours someOutString on sending thread and free on receiving...

>> I get hang in user.dll <<
The reason for hang could be limited message queue on Win98...

Regards

"...Ability to type is not enough to become a Programmer. Unless you type in VB. But then again you have to type really fast..."
Me

Re: Thread Interruption

suiram4025-Nov-03 9:00

suiram40

25-Nov-03 9:00

Opps... It works.

I did it and It works fine. Thank you. Anyway I have overmessage there
Now I SendMessage() 1-3/sec. and is OK.

{
static int modul = 0;
if(modul++%64 == 0)
{
UpdateProgressBars()
}
}
Thanks. Igor.

Re: Thread Interruption

igor196025-Nov-03 9:27

igor1960

25-Nov-03 9:27

>> Anyway I have overmessage there <<
OK, that confirms that the reason for a deadlock is limited queue on Win98.
Hope 3 seconds is fine, but it's still not be 100% bullet prooof. I don't see any solution other then PostMessage. With PostMessage also you can check on your sending thread that only one WM_SETTEXT is travelling and Post only if nothing is in queue.
For example if your string is global and sending thread sets it and receiving empties it --> you will only PostMessage if that global string is empty...

Regards

"...Ability to type is not enough to become a Programmer. Unless you type in VB. But then again you have to type really fast..."
Me

regd threads

karteek25-Nov-03 7:54

karteek

25-Nov-03 7:54

Hi,
How do I use threads in VC++?Please suggest a reference or sample program(s).

Karteek

Re: regd threads

David Crow25-Nov-03 8:21

David Crow

25-Nov-03 8:21

Try these:

http://flounder.com/uithreads.htm
http://flounder.com/workerthreads.htm

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

Need help setting project to use CxImage

ElizabethC25-Nov-03 7:45

ElizabethC

25-Nov-03 7:45

I have studied the instruction setting up a C++ project to use CxImage at http://www.codeproject.com/bitmap/cximage.asp.

But I still need help to generate/find the library files. I downloaded the source files and did a build on the project. But I do not see the library files stated in the instruction, for example, jpeg.lib.

Please help.

Elizabeth

Re: Need help setting project to use CxImage

ElizabethC25-Nov-03 8:38

ElizabethC

25-Nov-03 8:38

I just found out how to generate the lib files. I have to select a Configuration before the build.

Elizabeth

Getting a DLL version

Tom Wright25-Nov-03 7:29

Tom Wright

25-Nov-03 7:29

How can I get a DLL's version programmically?
Thanks

Tom Wright
tawright915@yahoo.com

Re: Getting a DLL version

David Crow25-Nov-03 7:40

David Crow

25-Nov-03 7:40

Assuming it has one, try VerQueryValue(), GetFileVersionInfo(), and related functions.

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

Re: Getting a DLL version

Tom Wright25-Nov-03 8:04

Tom Wright

25-Nov-03 8:04

So inorder to get the version I have to use all three of those functions listed in the MSDN? There's no easier way?

By the way is the answer 2?

Thanks

Tom Wright
tawright915@yahoo.com

Re: Getting a DLL version

David Crow25-Nov-03 8:15

David Crow

25-Nov-03 8:15

Tom Wright wrote:
So inorder to get the version I have to use all three of those functions listed in the MSDN?

Yes, you'll need to call GetFileVersionInfoSize(), GetFileVersionInfo(), and VerQueryValue(), in that order.

Tom Wright wrote:
There's no easier way?

It's easy once you've done it a few times. Now if you have no interest in how it all works, you can always skip to this class.

Tom Wright wrote:
By the way is the answer 2?

No.

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

Tooltip lost after setting state to TBSTATE_HIDDEN

ElizabethC25-Nov-03 7:22

ElizabethC

25-Nov-03 7:22

The application lost the toolbar tooltips after the SetState statement
m_wndToolBar.GetToolBarCtrl().SetState(ID_INBOX, TBSTATE_HIDDEN)

If I comment this line out, the tooltips comes back.

I tried to get the tooltips back by adding the following line
m_wndToolBar.SetBarStyle(m_wndToolBar.GetBarStyle() | CBRS_TOOLTIPS)

But this does not work. The tooltips are not showing up at the toolbar.

Elizabeth

Scrolling a multiline CRichEditCtrl

alex2000___++25-Nov-03 7:17

alex2000___++

25-Nov-03 7:17

Hi!

I am building a chat application and I'd like the main chat window to scroll down (such that the last message is at the bottom of my CRichEditCtrl) when the user enters a message.
I have not been yet able to do this. I know about LineScroll, but how many lines should I scroll with it? (Because the user can move the scroll bar upwards whenever he wants.)

Thanks!

Re: Scrolling a multiline CRichEditCtrl

igor196025-Nov-03 7:32

igor1960

25-Nov-03 7:32

How about this:

long lPos = GetRichEditCtrl().GetTextLength( );<br />
GetRichEditCtrl().SetSel( lPos, lPos ); // goto the end

"...Ability to type is not enough to become a Programmer. Unless you type in VB. But then again you have to type really fast..."
Me

Re: Scrolling a multiline CRichEditCtrl

alex2000___++25-Nov-03 7:43

alex2000___++

25-Nov-03 7:43

This doesn't work.

From SetSel()'s help:

"This function does not scroll the contents of the CRichEditCtrl so that the caret is visible."

Other ideas?

Re: Scrolling a multiline CRichEditCtrl

igor196025-Nov-03 7:56

igor1960

25-Nov-03 7:56

Yes, you are right, SetSel function does not scroll the contents...
However, I think that the user will be annoyed if he decides to scroll up and see for example history of messages and at that time another message arrives and your code will scroll down. I think it's not right.
So, think about it: maybe you don't have to scroll. Just append new message to the end. In that case SetSel helps.
Not insisting of course:

void CChatView::AddString(LPCSTR lpszStr, COLORREF color /* =RGB(0,0,0) */)<br />
{<br />
	LONG nStart, nEnd;<br />
	GetRichEditCtrl().GetSel( nStart, nEnd ); // remeber current selection<br />
	LONG nLength = GetTextLength( );<br />
<br />
	long lPos = GetRichEditCtrl().GetTextLength( );<br />
	GetRichEditCtrl().SetSel( lPos, lPos ); // goto the end<br />
<br />
	GetCharFormatSelection();<br />
	m_charformat.dwMask = CFM_COLOR;<br />
	m_charformat.dwEffects = NULL;<br />
	m_charformat.crTextColor = color;<br />
	GetRichEditCtrl().SetSelectionCharFormat(m_charformat);<br />
	Edit_ReplaceSel(m_hWnd, lpszStr);<br />
<br />
	if((nStart != nEnd)&&<br />
		(nLength > nEnd + 10))<br />
		GetRichEditCtrl().SetSel( nStart, nEnd ); // restore original selection // if user didn't scroll alot<br />
}

"...Ability to type is not enough to become a Programmer. Unless you type in VB. But then again you have to type really fast..."
Me

Re: Scrolling a multiline CRichEditCtrl

alex2000___++26-Nov-03 9:32

alex2000___++

26-Nov-03 9:32

The user won't be annoyed, because I want this scrolling to take place only when HE enters the message (and not his chat partner), so that he doesn't have to scroll down to the last line and then enter his message.

Thanks anyway!

Re: Scrolling a multiline CRichEditCtrl

alex2000___++25-Nov-03 7:44

alex2000___++

25-Nov-03 7:44

This doesn't work.

From SetSel()'s help:

"This function does not scroll the contents of the CRichEditCtrl so that the caret is visible."

Other ideas?

Re: Scrolling a multiline CRichEditCtrl

_oti14-May-09 22:34

_oti

14-May-09 22:34

Here's a really late response for you, and I understand that you will probably already have a solution. But my searching around on the net didn't find much more than your question and a lack of an answer. Hope this helps someone else.

This works for me:

CRichEditCtrl results(myEditBoxHWND);
LONG lLen = results.GetWindowTextLength();
results.SetSel(lLen, lLen);
results.ReplaceSel(_T("My new bit of text\n"));

int nFirstVisible = results.GetFirstVisibleLine();
int nTotalLines = results.GetLineCount();
results.LineScroll(nTotalLines - nFirstVisible);

Phil

--
All things considered, you can't really consider all things ...

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