C / C++ / MFC Discussion Boards

Toni7816-Jul-03 16:06

16-Jul-03 16:06

Sorry about the previous post. I thought you were trying to get the record count but you're not. Anyways, to get to the record that you want to, as DavidCrow suggested you could use unique identifiers. However, if you don't have unique identifiers, you can set filters and then the number of records that you have to iterate will be very small. More details you add to the filter, less records you will get.

// Afterall, I realized that even my comment lines have bugs

When one cannot invent, one must at least improve (in bed).-My latest fortune cookie

LBN_SELCHANGE

John R. Shaw15-Jul-03 9:16

John R. Shaw

15-Jul-03 9:16

[EDIT: Whoops! I used WORD wParam insted of WPARAM wParam (this is not Win16 code)]

I have a list box control in a dialog with notify selected.

Now here is the problem: when I click on a selection the dialogbox receives a notification ( HIWORD(wParam) ) = 0 insted of = 1 (LBN_SELCHANGE). I have used listboxes and comboboxes for years and have always receive the correct value (1). 0 is not even a valid notification code (unless it's undocumented).

Any ideas?

INTP

Process, Module and Thread enumeration classes

kurnaziso15-Jul-03 9:10

kurnaziso

15-Jul-03 9:10

I downloaded sample application and the source codes. I tried to run the application but
I couldn't. While I was compiling the codes, I met some problems. First of all psapi.h error.
I dowloaded psapi.h end psapi.lib files and placed include and lib in the folders. But
I read the Q&A part. atlsecurity.h file wasn't appeared. Whe I compiled the codes, I met some errors below.
I use VC6 and Win98 Second edition.
Can you say me how can I compile and the sample? Please describe as possible as simple. Because
I am new in VC6.

w32process.cpp(83) : error C2039: 'GetProcessImageFileName' : is not a member of '`global namespace''
w32process.cpp(83) : error C2065: 'GetProcessImageFileName' : undeclared identifier
w32pSample\w32process.cpp(100) : error C2065: '_alloca' : undeclared identifier
w32pSample\w32process.cpp(100) : error C2440: 'static_cast' : cannot convert from 'int' to 'struct _TOKEN_USER *'
Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast
w32pSample\w32process.cpp(395) : error C2039: 'OpenThread' : is not a member of '`global namespace''
w32pSample\w32process.cpp(395) : error C2065: 'OpenThread' : undeclared identifier
w32pSample\w32process.cpp(395) : error C2440: 'initializing' : cannot convert from 'int' to 'void *'
Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast

Good bye.

Exchange server plugin... Where to start?

LukeV15-Jul-03 8:46

LukeV

15-Jul-03 8:46

Hi!

anyone here knows where I can find some info/samples (can be online or a book) about developing plugins for Exchange Server?

Thanks! Smile | :)

---------------
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Re: Exchange server plugin... Where to start?

Michael P Butler15-Jul-03 9:07

Michael P Butler

15-Jul-03 9:07

http://www.slipstick.com/[^] used to be pretty good. I haven't visited for a while, so I don't know if it has changed.

Michael

'War is at best barbarism...Its glory is all moonshine. It is only those who have neither fired a shot nor heard the shrieks and groans of the wounded who cry aloud for blood, more vengeance, more desolation. War is hell.' - General William Sherman, 1879

Help! Mysterious type mismatch errors with my ActiveX control

David F Zimny15-Jul-03 8:39

David F Zimny

15-Jul-03 8:39

I have an MFC ActiveX control and an MFC application that uses it. I use Visual C++ 6.0 on Windows NT 4.0 SP6.

I recently added a new property and a new method to the ActiveX control. The control compiled, linked, and registered just fine.

Then I went to the application project, regenerated the wrapper class for the control (Project->Add To Project->Components And Controls..., Registered ActiveX Controls), and rebuilt the app successfully...

But when I run the app, it gets COM Type Mismatch errors when it tries to access a property and a method that were already in the control before my modifications!

I compared the .odl file in the ActiveX control project with the previous version from SourceSafe, and the only changes made to the file were the new property and method I added, which my app isn't even trying to use yet.

I compared the wrapper class in my applicaton to the .odl file to make sure the property/method ID's and parameter/return types all match, and they do. I also looked up the DISPATCH_MAP entries for the misbehaving items in the control's source code - they match too.

And yes, I tried a Rebuild All on both projects - no effect.

Does anyone have any idea why these type mismatch errors are occurring or how I can avoid them?

This problem has me completely flabbergasted and my project has ground to a halt as a result. Any information that could help shed light on this problem would be greatly appreciated.

Play sound from console program?

DaveE9th15-Jul-03 8:26

DaveE9th

15-Jul-03 8:26

Is it possible to play sounds (such as MIDI or mp3 files from a console program?

Thanks, Dave

Big Grin | :-D

"The man who reads nothing is better educated than the man who reads nothing but newspapers."- Thomas Jefferson

Re: Play sound from console program?

John M. Drescher15-Jul-03 8:30

John M. Drescher

15-Jul-03 8:30

Did you look at http://www.codeproject.com/audio/MidiDemoCp.asp[^]

I know it has a GUI but from the looks of it to me that is just to get the file name...

John

Re: Play sound from console program?

DaveE9th15-Jul-03 9:09

DaveE9th

15-Jul-03 9:09

I'll study the info you sent me John, thanks much

Dave

Big Grin | :-D

"The man who reads nothing is better educated than the man who reads nothing but newspapers."- Thomas Jefferson

Re: Play sound from console program?

David Crow15-Jul-03 9:46

David Crow

15-Jul-03 9:46

I've never tried it but would sndPlaySound() work?

Re: Play sound from console program?

Ryan Binns15-Jul-03 14:51

Ryan Binns

15-Jul-03 14:51

DavidCrow wrote:
I've never tried it but would sndPlaySound() work?

Only for .WAV files. Using MCI will allow MIDI and MP3 files as well.

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

getting device context without the title bar

Member 45099015-Jul-03 8:21

Member 450990

15-Jul-03 8:21

hi,i am writing an activex control to print the webrowser content through MFC.i want to get the device context of the browserwindow exluding all the title bars etc..(only document of the browser)
my intention is to print completely the document of the browser which might pan horizontally multiple pages.
when i am using
GetWindowDC(browser handle) i am getting the complete screen(that is what this function does)is there a way for me to get just the document area,if i need to use getDC,how can i get the device context by passing the browser handle.i am confused.
please suggest me a solution

regds
GVS

gvs

How to add a Control In a List Control

Cyberizen15-Jul-03 8:01

Cyberizen

15-Jul-03 8:01

hello people
I want to add a COMBO BOX or any other Windows control in a LIST CONTROL that is the COMBO BOX should appear as if it were an item of the LIST CONTROL

Regards
Ahmed Ajmal

Re: How to add a Control In a List Control

John M. Drescher15-Jul-03 8:10

John M. Drescher

15-Jul-03 8:10

It looks like you need a GridControl. Look at Chris Maunders Grid control:

http://www.codeproject.com/miscctrl/gridctrl_combo.asp[^]

John

how to serialize __int64

Shay Harel15-Jul-03 7:55

Shay Harel

15-Jul-03 7:55

MFC has a data type of _int64 but I just found out I can't serialize it...

I can read the low and high words and serialize them seperatly, but that's too much work.

Shay

Re: how to serialize __int64

John M. Drescher15-Jul-03 8:08

John M. Drescher

15-Jul-03 8:08

Shay Harel wrote:
I can read the low and high words and serialize them seperatly, but that's too much work.

If MFC does not searialize _int64 you must do it seperatly.

John

Re: how to serialize __int64

David Crow15-Jul-03 10:09

David Crow

15-Jul-03 10:09

Shay Harel wrote:
MFC has a data type of _int64...

This should read "Microsoft has a data type of _int64..."

Shay Harel wrote:
I can read the low and high words and serialize them seperatly, but that's too much work.

Actually I believe those are DWORDs, which CArchive does know how to handle, but here's a piece of code that might work for you:

char szNum[64];

if (ar.IsStoring())
{
    sprintf(szNum, "%I64u", m_i64MyBigNumber);
    ar.Write(szNum, sizeof(szNum));
}
else
{
    ar.Read(szNum, sizeof(szNum));
    m_i64MyBigNumber = _atoi64(szNum);
}

Re: how to serialize __int64

Anonymous15-Jul-03 15:05

Anonymous

15-Jul-03 15:05

I use the << and >> operators.

What I did is tricky, I just broke it to 2 ints and serialized them one after the other, but I will try your stuff as well.

Re: how to serialize __int64

basementman15-Jul-03 10:21

basementman

15-Jul-03 10:21

You can always call the Read and Write methods of CArchive, passing a pointer to your int64. EX:

void CMyClass::Serialize(CArchive &ar)
{
  if (ar.IsStoring())
    {
      ar.Write((void *)&m_i64MyBigInt,sizeof(_int64));
    }
  else
    {
      ar.Read((void *)&m_i64MyBigInt,sizeof(_int64));
    }
}

Using the Read and Write methods allows you to serialize "non-serializable" data (non-mfc data containers).

onwards and upwards...

Converting lines to polygons?

cdsmith15-Jul-03 7:37

cdsmith

15-Jul-03 7:37

Hello,

I am working on an application where I get passed a list of line segments. I want to convert the line segments into polygons. Anybody have a reference to an algorithm or code fragment that can do this? Anybody have a quick sketch of an algorithm to do this. Thanks for any ideas.

Craig

Re: Converting lines to polygons?

John R. Shaw15-Jul-03 9:20

John R. Shaw

15-Jul-03 9:20

BOOL Polygon(
HDC hdc, // handle to DC
CONST POINT *lpPoints, // polygon vertices
int nCount // count of polygon vertices
);

or am I missing something?

INTP

Re: Converting lines to polygons?

Ryan Binns15-Jul-03 14:49

Ryan Binns

15-Jul-03 14:49

John R. Shaw wrote:
or am I missing something?

Nope. That would be my suggestion as well Smile | :)

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Re: Converting lines to polygons?

cdsmith16-Jul-03 3:35

cdsmith

16-Jul-03 3:35

If only it were that ease... Smile | :)

Yup, you are missing something. The lines are from a wire mesh drawing, there are thousands of lines and they make up hundereds of polygons. The trick is to figure out what lines grouped together make up a polygon.

Craig

Re: Converting lines to polygons?

John R. Shaw16-Jul-03 6:12

John R. Shaw

16-Jul-03 6:12

Search for "3D Graph ActiveX Control" at codeprject. I have not studied the code but it should help. There is no lack of graphics related sites on the www.

INTP

Rotating a shape within a bounding rect?

cdsmith15-Jul-03 7:35

cdsmith

15-Jul-03 7:35

Hello All,

I am working on a drawing package. The user can drag and drop shapes (i.e. rect, elipse, star,...) and text into defined boxes on the screen. One requirement is to allow the user to rotate the shapes within the boxes. I have the rotation code down, but I am having trouble keeping the rotated shape in the box. For example when the user drops an elipse (tall and narrow) into a box. When I rotate this elipse 45 degrees it becomes bigger than the bounding box.

Any ideas on how to allow the rotation but still keep the shape in the bounding box. Thanks!

Craig

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