How to add a class to a MFC Application - C / C++ / MFC Discussion Boards

First Prev Next

can be avoided memory dump?

RomTibi3-Dec-07 8:45

RomTibi

3-Dec-07 8:45

The question is in the title

36. When you surround an army, leave an outlet free.
...
Do not press a desperate foe too hard.

SUN-TZU - Art of War

Re: can be avoided memory dump?

David Crow3-Dec-07 10:31

David Crow

3-Dec-07 10:31

RomTibi wrote:
The question is in the title

Maybe so, but even if it were in the body, it still makes no sense. What exactly are you asking?

"Normal is getting dressed in clothes that you buy for work and driving through traffic in a car that you are still paying for, in order to get to the job you need to pay for the clothes and the car and the house you leave vacant all day so you can afford to live in it." - Ellen Goodman

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: can be avoided memory dump?

RomTibi4-Dec-07 9:00

RomTibi

4-Dec-07 9:00

Maybe I can't understand myself Confused | :confused:

Thanks anyway Smile | :)

36. When you surround an army, leave an outlet free.
...
Do not press a desperate foe too hard.

SUN-TZU - Art of War

Re: can be avoided memory dump?

Hamid_RT10-Apr-08 7:22

Hamid_RT

10-Apr-08 7:22

Not exactly but you can decrement them.

CListCtrl, view type is ICON, how to eliminate the text

followait2-Dec-07 0:51

followait

2-Dec-07 0:51

m_list.InsertItem(i,NULL,i);

I wrote like this, though no text, it still reserve the line for text, so I can't align the image well, how to take off the reserved line for text?

GetThumbnailImage, and show it in CListCtrl

followait2-Dec-07 0:27

followait

2-Dec-07 0:27

GetThumbnailImage return Image,
but CImageList dones't support Image, but CBitmap.

How to list thumbnails in CListCtrl, I want to support as many formats as GDI+ supports, and because other codes are using GDI+, I'd not to use another library.

Re: GetThumbnailImage, and show it in CListCtrl

followait2-Dec-07 0:47

followait

2-Dec-07 0:47

Bitmap bmp(...) // using a jpeg file here
Bitmap *pBmp=(Bitmap *)bmp.GetThumbnailImage // the cast works well

Is it safe?

How to add a class to a MFC Application

vjasai2-Dec-07 0:26

vjasai

2-Dec-07 0:26

Hi,
i am using Visual Studio 2005. The problem I have is when i select VC++ and MFC application, I am giving a name to the application as ExamSchedule.
In the Sourcefiles.. I am able to see ExamScheuledoc.cpp,ExamScheduleview.cpp and ExamSchedule.cpp. I am adding few controls on to the dialog and doubleclicking on the dialog. So a new popup asking for cpp and .h file for that dialog is coming.
Should I give a new class name or the browse ExamSchedule.cpp file name which is already created.

Also when I am giving new .cpp and .h file, the program is not executing.

Plz let me know how to proceed.

Thanks,
Sai

Re: How to add a class to a MFC Application

Hamid_RT3-Dec-07 19:24

Hamid_RT

3-Dec-07 19:24

What do you want to do and did you get any error when it deosnt work?

High frequency windows Timing - Parallel Port

szymon791-Dec-07 23:48

szymon79

1-Dec-07 23:48

Hi everyone!

Few weeks ago I started to work on private CNC machine project. I’ve done a lot of design work using ProE. Now I am getting into control part. I am using Stepper Motors, which have to be controlled via Parallel Port.

My intent is to make software, which can send impulses on Parallel port pins with desired frequency. I can use Windows built-in timer but it is not enough accurate, I need more than 1000 Hz. For my machine I need something like 45000 Hz or more. I tried to use QueryPerformancecounter using while loop, but it use my CPU a lot. Is there any more accurate timer than 1 ms, which can call Event in windows, like Windows TTimer does? Is it possible to use QueryPerformance Timer or RDTSC, as Event Recalling functions? I am using Visual C++ 2005.

I look forward to your reply.

Best regards

Szymon

Re: High frequency windows Timing - Parallel Port

Cedric Moonen2-Dec-07 1:35

Cedric Moonen

2-Dec-07 1:35

If your target platform is windows, then you can forget your idea: Windows is not a real-time operating system. Which means that you will never be able to have such an accuracy. You'll need to use a real-time operating system for that purpose.

Cédric Moonen
Software developer

Charting control [v1.2]

Re: High frequency windows Timing - Parallel Port

szymon792-Dec-07 1:59

szymon79

2-Dec-07 1:59

Ok.

So what would you propose? What kind of system am I able to use?

What do you think about this kind of software (Mach2, Mach3, http://www.artsoftcontrols.com/artsoft/index/index.htm ) or KCAM. They are installed on windows platform and intended to use to control Stepper Motors via Parallel Port. I can use them of course and I will as last chance but I would rather create something own.

I don't necessarily need Real Time control. I need any possibility to tact Parallel Port Pins with given frequency. Just every help is appreciate...

Thank you

Szymon

convert bmp to pdf ?

keyto1-Dec-07 22:31

keyto

1-Dec-07 22:31

how can i convert bmp image to pdf ?

Re: convert bmp to pdf ?

bob169723-Dec-07 17:08

bob16972

3-Dec-07 17:08

PDF reference (a.k.a "How to convert a bitmap to PDF")[^]

Free C++ CD Burner

Hadi Dayvary1-Dec-07 20:33

Hadi Dayvary

1-Dec-07 20:33

Hi Is there a free C++ library or source code for writing on CD?
I have seen http://www.codeproject.com/system/udfcdr.asp[^] but it crashes my Notebook(sometimes).
Is there any other free library?
thanks

Re: Free C++ CD Burner

Rajesh R Subramanian4-Jan-08 6:44

Rajesh R Subramanian

4-Jan-08 6:44

Google for Infra Recorder. I do not know if it is C++, but it works great.

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->ßRÅhmmÃ<-·´¯`·.

use CListCtrl to list thumbnail, using GDI+

followait1-Dec-07 20:22

followait

1-Dec-07 20:22

Because GDI+ support many formats and there is a function Image::GetThumbnailImage.

Is GDI+ not designed not very compatible with MFC?
So not convenient?

Mad | :mad:

Re: use CListCtrl to list thumbnail, using GDI+

Mark Salsbery1-Dec-07 20:31

Mark Salsbery

1-Dec-07 20:31

GDI+ is perfectly compatible with MFC.

It would be silly to wrap GDI+ classes in MFC classes since GDI+ already has a
class-based interface.

The list-view control is the problem. It has no built in functionality for displaying
thumbnail images. There's lots of articles showing how a list-view control can be
enhanced to provide this functionality.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: use CListCtrl to list thumbnail, using GDI+

followait1-Dec-07 20:34

followait

1-Dec-07 20:34

Thanks.

I'll search it agian.

Re: use CListCtrl to list thumbnail, using GDI+

Mark Salsbery1-Dec-07 20:37

Mark Salsbery

1-Dec-07 20:37

Hint: Google "CListCtrl thumbnails" Smile | :)

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: use CListCtrl to list thumbnail, using GDI+

bob169721-Dec-07 21:17

bob16972

1-Dec-07 21:17

Mark Salsbery wrote:
It would be silly to wrap GDI+ classes in MFC classes

I beg to differ. Smile | :)

The GDI+ C++ wrapper classes are absolutely horrible from a MFC programmers perspective. Another MFC-ish wrapper makes life so much nicer even if it costs a tad bit in performance.

Just my two cents

Re: use CListCtrl to list thumbnail, using GDI+

followait1-Dec-07 23:46

followait

1-Dec-07 23:46

Which one do you mean?
CxImage?

GDI+ Bitmap::GetHBITMAP error:

followait1-Dec-07 19:45

followait

1-Dec-07 19:45

Here is the error Infomation:
error C2228: left of '.GetHBITMAP' must have class/struct/union type

Bitmap bmp(LPCTSTR(FilePath));
Color clr(255,0,0,0);
HBITMAP hBmp;
bmp.GetHBITMAP(clr,&hBmp);
CBitmap *pBmp=new CBitmap;
pBmp->FromHandle(hBmp);

PS: why Gdiplus::Black can't be used to replace clr here?

Re: GDI+ Bitmap::GetHBITMAP error:

Mark Salsbery1-Dec-07 20:00

Mark Salsbery

1-Dec-07 20:00

Maybe something like this...

Bitmap bmp(LPCTSTR(FilePath));  <font color="Red"><-- what's this?  A WCHAR * is expected here, not a LPCTSTR</font>
HBITMAP hBmp;
bmp.GetHBITMAP(Color::Black, &hBmp);
CBitmap *pBmp=new CBitmap;
pBmp->Attach(hBmp);  <font color="Red">//<-- attaching more permanent than FromHandle()!  Check the docs!</font>

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: GDI+ Bitmap::GetHBITMAP error:

followait1-Dec-07 20:06

followait

1-Dec-07 20:06

all right

But what about the error C2228?

Last Visit: 31-Dec-99 18:00 Last Update: 18-Apr-24 20:17

Refresh

ᐊ Prev 1...5637 5638 5639 564056415642 5643 5644 5645 5646 Next ᐅ

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.