MS VC++ Problem - C / C++ / MFC Discussion Boards

Re: Making a translucent window ignore the mouse and keyboard

rentzk15-Mar-04 12:09

15-Mar-04 12:09

I Googled the HTTRANSPARENT return value, and they mention another window style called WS_EX_NOACTIVATE, that looks like it may take care of the keyboard. I'll have to experiment to find out.

ITask->Run() always returning S_OK

karam_chand15-Mar-04 7:25

karam_chand

15-Mar-04 7:25

Hello,

I created a job for task scheduler but I didnt set the password, so the job will never be executed.

From I app I executed the job. The ciode is as follows:

code:--------------------------------------------------------------------------------
ITask *task;
hr = m_pITS->Activate( wjobname,
IID_ITask,
(IUnknown**) &task);

if ( FAILED ( hr ) )
return;

hr = task->Run();

if ( hr != S_OK ) {
MessageBox( m_Hwnd, "Could not execute job.", MAIN_APPNAME, MB_ICONERROR | MB_OK );
} else {
MessageBox( m_Hwnd, "Job executed successfully.", MAIN_APPNAME, MB_ICONINFORMATION | MB_OK );
}

task->Release();
--------------------------------------------------------------------------------

The problem is whether the job was executed or not (it is not executed coz I didnt give the user password) the function is always returning S_OK. So whatever may be the result I am getting the messagebox "job executed successfully".

Is it normal?

Karam

Re: ITask->Run() always returning S_OK

ian mariano15-Mar-04 19:16

ian mariano

15-Mar-04 19:16

If you look in MSDN, you'll see:

"A return code of S_OK means that the request to run the work item has been made; it does not mean that the work item has started running. There may be a delay of a few seconds after Run returns before the work item actually starts running.

To determine whether the work item is running, call IScheduledWorkItem::GetStatus."

So, you're good checking that it was scheduled, you need to go further:

hr = task->Run();
 
if (SUCCEDED(hr))
{
   //  check its status
   HRESULT  status;
   BOOL   started = FALSE;
 
   while (TRUE)
   {
      ::Sleep(250);   //   give us some time

      hr = task->GetStatus(&status);
 
      if (FAILED(hr))   break;
 
      if (SCHED_S_TASK_RUNNING == status)
      {
         started = TRUE;
 
         break;
      }
      else if (SCHED_S_TASK_READY == status)
         continue;
      else
         break;   //  could not schedule
   }
 
   if (started)
   {
      MessageBox(m_hWnd, "Job is running", ...);
   }
   else
   {
      MessageBox(m_hWnd, "Could not execute job", ...);
   }
}
else
{
   MessageBox(m_hWnd, "Could not start job", ...);
}
 
task->Release();   //   we're done with it

Ian Mariano - http://www.ian-space.com/

"We are all wave equations in the information matrix of the universe" - me

Re: ITask->Run() always returning S_OK

karam_chand15-Mar-04 20:07

karam_chand

15-Mar-04 20:07

Thank you.

That is exactly what i require Smile | :)

If I face any problem I will come back.

MFC and Drop Down Lists

_psh_15-Mar-04 7:15

_psh_

15-Mar-04 7:15

Hi all,

Does anybody know why my drop down list won't drop down?

I've added items to it in the OnInitDialog overide (which calls the same CDialog function beforehand btw) and i can scroll through them using the keyboard. However, when I click the drop down button, the list doesn't appear - just a very small no. of horizontal lines appear below the text display window.

Can anybody help?

Thanks
Paul

Re: MFC and Drop Down Lists

_psh_15-Mar-04 7:23

_psh_

15-Mar-04 7:23

I just had a brain-wave, and it worked.

The reason this was occuring was because when I created the control in the dialog editor, i only specified a control height which was that of the actual window for the combo box. I did not anticipate that windows would limit the actual drop down list to this space!!

It's silly things like this that hinder application development Frown | :(

.. Live and learn i guess Smile | :)

Re: MFC and Drop Down Lists

shahnk15-Mar-04 18:59

shahnk

15-Mar-04 18:59

Yup I experienced the same problem before..
weird huh...

MS VC++ Problem

Chernobog115-Mar-04 6:53

Chernobog1

15-Mar-04 6:53

Hi, please help mi with this problem. When compile my project it compiles all cpp files (not only changed one). When pressing F5 it wants to build it all and writes that obj files are not up to date or does not exist. This is happening over and over again even if i dont make any change to code. Do u have any suggestion why this is happening? - it happend accidentaly (i quess) after 3 months workings with the project ... Thanks

Re: MS VC++ Problem

Antti Keskinen15-Mar-04 8:16

Antti Keskinen

15-Mar-04 8:16

You could try loading up the workspace/solution, then doing a complete rebuild. Then close the workspace/solution, and close the IDE. Then restart, and reopen the IDE. This might fix the problem.

The actual problem persists in the project database. On a MS VC++ 6.0 platform, deleting the project database file might resolve the issue.

-Antti Keskinen

----------------------------------------------
The definition of impossible is strictly dependant
on what we think is possible.

Re: MS VC++ Problem

Michael Dunn15-Mar-04 9:35

Michael Dunn

15-Mar-04 9:35

This usually happens when a header file has a modified date in the future. So check your system clock and the dates on any header files in your project.

--Mike--
Personal stuff:: Ericahist | Homepage
Shareware stuff:: 1ClickPicGrabber | RightClick-Encrypt
CP stuff:: CP SearchBar v2.0.2 | C++ Forum FAQ
----
Four fonts walk into a bar. The bartender says "Hey - get out! We don't want your type in here."

Re: MS VC++ Problem

Chernobog115-Mar-04 10:39

Chernobog1

15-Mar-04 10:39

Thank u very much. It worked.. Wink | ;)

How to draw a line in Edit box?

bin892215-Mar-04 6:21

bin8922

15-Mar-04 6:21

Hello everyone. I want to draw edges for an Edit box. But I have to draw the lines inside the Edit box, because the edit box is too big. I tried to change the size of the Edit box, but I cannot make the height any smaller. The problem is that the line in the Edit box will be blocked by the Edit box. I tried to set the edit box to transparent, but I still cannot the lines.
Any idea about how to fix this problem?
Thanks a lot in advance.

Bin

Re: How to draw a line in Edit box?

Prakash Nadar15-Mar-04 6:43

Prakash Nadar

15-Mar-04 6:43

Derive a class from CEditBox, handle OnDraw Event and now the whole Editbox control window is all urs to draw what ever you want to.

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prakashnadar@msn.com

DOS font under Windows

Aaron Schaefer15-Mar-04 6:07

Aaron Schaefer

15-Mar-04 6:07

Hi All,

Anybody know how to select the old DOS font in windows? The one with the little happy faces, playing card symbols and line drawing stuff? I'm looking for something along the lines of:

HFONT hFont = CreateFont(?????);

Thanks

Aaron

Re: DOS font under Windows

Prakash Nadar15-Mar-04 6:39

Prakash Nadar

15-Mar-04 6:39

how about font type "System"

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prakashnadar@msn.com

Re: DOS font under Windows

Aaron Schaefer15-Mar-04 6:43

Aaron Schaefer

15-Mar-04 6:43

No, that doesn't do it. At least not on my machine. I think these were in the 0-31 range, but I don't get anything for those. I did try other fonts, like "Comib Sans MS", and they all appear the way they should, I just can't get the little smiley characters. Maybe some of the other parameters needto be changed?

Here's what I tried to do:

case WM_PAINT:
// Paint the window's client area.
{

HDC hdc;
if(hFont == NULL)
{
hFont = CreateFont(0,0,0,0, FW_DONTCARE, FALSE, FALSE, FALSE, ANSI_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY, FF_DONTCARE, "System");
//hdc = GetDC(m_hWnd);
}

PAINTSTRUCT ps;
hdc = BeginPaint(m_hWnd, &ps);

HFONT hOld = (HFONT)SelectObject(hdc, (HGDIOBJ)hFont);
SetTextColor(hdc, RGB(255,255,255));
SetBkColor(hdc, RGB(0,0,0));

RECT rc;
GetClientRect(m_hWnd, &rc);

int nY = 0;
for(int i = 0; i < 256; i += 64)
{
TextOut(hdc, 0, nY, &m_szBuff[i], 64);
nY += 24;
}
//DrawText(hdc, m_szBuff, 256, &rc, DT_LEFT | DT_WORDBREAK);
SelectObject(hdc, (HGDIOBJ)hOld);
EndPaint(m_hWnd, &ps);

}
return 0;

Thanks,

Aaron

Re: DOS font under Windows

Prakash Nadar15-Mar-04 6:48

Prakash Nadar

15-Mar-04 6:48

Arial has all the facethings and other images like hearts, spades etc.

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prakashnadar@msn.com

Re: DOS font under Windows

Ravi Bhavnani15-Mar-04 7:07

Ravi Bhavnani

15-Mar-04 7:07

Try using OEM_CHARSET instead of ANSI_CHARSET.

[From MSDN]
The OEM character set is typically used in full-screen MS-DOS sessions for screen display. Characters 32 through 127 are usually the same in the OEM, U.S. ASCII, and Windows character sets. The other characters in the OEM character set (0 through 31 and 128 through 255) correspond to the characters that can be displayed in a full-screen MS-DOS session. These characters are generally different from the Windows characters.

/ravi

My new year's resolution: 2048 x 1536
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Re: DOS font under Windows

Aaron Schaefer15-Mar-04 7:48

Aaron Schaefer

15-Mar-04 7:48

Thanks! Just what I was looking for!

"turncoats"

andy_ecl15-Mar-04 5:47

andy_ecl

15-Mar-04 5:47

Anybody care to explain what a "turncoat" is when used instead of exceptions?

Re: "turncoats"

Maximilien15-Mar-04 6:30

Maximilien

15-Mar-04 6:30

andy_ecl wrote:
turncoat

??? What's a turncoat ?

Maximilien Lincourt
Your Head A Splode - Strong Bad

working with TWAIN

Dudi Avramov15-Mar-04 5:16

Dudi Avramov

15-Mar-04 5:16

Hi there,
does anyone have a sample code for using buffer transfer mode with TWAIN instead of native mode?

Thanks,
Dudi

Slow delete under MFC?

LozEvans15-Mar-04 4:47

LozEvans

15-Mar-04 4:47

Ladies and Gents,

Wrote a Win 32 app, which ran nicely thankyou, within it I had aggregate structures containing up to 800K instances of a Point class. All was well.

When I ported it to run in under an MFC app, the delete of the top level container was taking > 5 seconds, where previously it was near instantaneous.

It uses STL containers, all the usual speed up tricks, but simply moving the classes into an MFC app causes it to run very very slow.... when deleting.

Anyone come across this?? Any idea's??

Cheers
Laurence

Re: Slow delete under MFC?

Anonymous15-Mar-04 4:53

Anonymous

15-Mar-04 4:53

Are you compiling with debug enabled? MFC has a special new/delete for debug builds, that does a lot of memory leak checking. Great for debugging, but it slows it down a lot.

Re: Slow delete under MFC?

LozEvans15-Mar-04 4:57

LozEvans

15-Mar-04 4:57

Thanks for the reply.

Tried it under Debug and Release, with the same Nett result.

Omitted the DEBUG_NEW macro from the classes in question anyway.

Cheers
Laurence

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