C / C++ / MFC Discussion Boards

Re: CFileDialog Problem breakpoint int 3

ForNow5-Mar-13 2:09

ForNow

5-Mar-13 2:09

That exactly the point I had the contructer coded with filers window title etc.

but this code

C++

CFileDialog mydialog(TRUE);

		mydialog.DoModal();

should work

This what happens when I step to mydialog.DoModal();

The code hits a break point
and later on get a access violation
doing a Call Stack at this point seems that mscowrks.dll is executing
I moved this code to the beginng of CWinApp::Initinstance
so Its one the first things I do and still I have problem

ASM

000007FEFD223C6A  nop  
000007FEFD223C6B  nop  
000007FEFD223C6C  nop  
000007FEFD223C6D  nop  
000007FEFD223C6E  nop  
000007FEFD223C6F  nop  
000007FEFD223C70  xchg        ax,ax  
000007FEFD223C72  int         3  
000007FEFD223C73  ret  
000007FEFD223C74  nop  
000007FEFD223C75  nop  
000007FEFD223C76  nop  
000007FEFD223C77  nop  
000007FEFD223C78  nop

Re: CFileDialog Problem breakpoint int 3

Albert Holguin5-Mar-13 10:00

Albert Holguin

5-Mar-13 10:00

ForNow wrote:
mscowrks.dll is executing

You're probably compiling this with some odd options, that's part of .Net (I believe), which you shouldn't be using at all on a C++/MFC application. I would guess your problem is not the code but the way you configured the project.

Re: CFileDialog Problem breakpoint int 3

ForNow5-Mar-13 10:15

ForNow

5-Mar-13 10:15

Thanks

that makes sense

Re: CFileDialog Problem breakpoint int 3

Richard MacCutchan4-Mar-13 23:04

Richard MacCutchan

4-Mar-13 23:04

Assuming this is a continuation of your previous problem, I already suggested this[^], and similarly tried to explain, here[^], about the correct use of casts in C. Randomly changing parameters or removing them altogether is no substitute for making full use of both documentation and debug information.

Use the best guess

Re: CFileDialog Problem breakpoint int 3

ForNow5-Mar-13 2:12

ForNow

5-Mar-13 2:12

I did that and I still encountred the problem breakpoint followed by access violation

bottom line till me if I right

CFileDialog.mydialog(TRUE);

mydialog.DoModal(TRUE);

Should work as it would take default paramters correct ?

Re: CFileDialog Problem breakpoint int 3

Richard MacCutchan5-Mar-13 3:20

Richard MacCutchan

5-Mar-13 3:20

ForNow wrote:
Should work as it would take default paramters correct ?

Not necessarily, as we do not know what else your code is doing. As I said before, read the documentation[^] and carefully check against your code. Also ensure that your project has been completely rebuilt to ensure no undiagnosed compiler errors remain.

Use the best guess

Re: CFileDialog Problem breakpoint int 3

ForNow5-Mar-13 4:57

ForNow

5-Mar-13 4:57

I'll re-read the doc

but

1) I got s clean build

2) this is the first thing in CWinApp::InitInstance

thank you

Re: CFileDialog Problem breakpoint int 3

Richard MacCutchan5-Mar-13 5:59

Richard MacCutchan

5-Mar-13 5:59

There must be something wrong with your system that we are not aware of. Does this application run correctly if you do not use the CFileDialog?

Use the best guess

Re: CFileDialog Problem breakpoint int 3

ForNow5-Mar-13 6:04

ForNow

5-Mar-13 6:04

Yes it does

I am begining to think it must be something like file permissions

I live next to someone who worked for MicroSoft

He had a look at it once I'll ask him again

Thsnks

Re: CFileDialog Problem breakpoint int 3

Richard MacCutchan5-Mar-13 6:18

Richard MacCutchan

5-Mar-13 6:18

That is most unlikely unless you have a Microsoft library that is corrupt or somehow unreadable.

I just reread some of your earlier posts and noticed :

ForNow wrote:
doing a Call Stack at this point seems that mscowrks.dll is executing

This, according to http://www.ehow.com/facts_7827759_mscorwksdll.html[^] is a .NET library, so I would be interested to know how that is getting connected to your app.

Use the best guess

Re: CFileDialog Problem breakpoint int 3

David Crow5-Mar-13 6:05

David Crow

5-Mar-13 6:05

ForNow wrote:

2) this is the first thing in CWinApp::InitInstance

The first thing? Maybe you are not giving the framework enough time to get everything ready. Perhaps putting the code someplace else (e.g., in response to a button click) would work better.

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous

Re: CFileDialog Problem breakpoint int 3

David Crow5-Mar-13 3:58

David Crow

5-Mar-13 3:58

ForNow wrote:

mydialog.DoModal(TRUE);

This compiles?

Re: CFileDialog Problem breakpoint int 3

David Crow5-Mar-13 4:03

David Crow

5-Mar-13 4:03

I created an empty dialog-based app with the following change:

BOOL CDCDlg::OnInitDialog()
{
    CDialog::OnInitDialog();

    SetIcon(m_hIcon, TRUE);
    SetIcon(m_hIcon, FALSE);

    CFileDialog dlg(TRUE);
    dlg.DoModal();

    return TRUE;
}

It worked fine. Can you try something similar?

Re: CFileDialog Problem breakpoint int 3

ForNow5-Mar-13 5:41

ForNow

5-Mar-13 5:41

Tried the coce

the CfileDialog modeless displays it for an instance

and then i get a messagebox HERC_CMD encountered breakpoint

Re: CFileDialog Problem breakpoint int 3

David Crow5-Mar-13 6:05

David Crow

5-Mar-13 6:05

ForNow wrote:
Tried the coce

Where did you put it?

Re: CFileDialog Problem breakpoint int 3

AbbeytekMD6-Mar-13 0:24

AbbeytekMD

6-Mar-13 0:24

There's a known problem with CFileDialog crashing although I can't remember the exact situations. Something to do with WINVER, I think. Anyway, you can test if this is what your problem is by creating the dialog on the stack and seeing if that stops the crash.

e.g.

CFileDialog* pFD = new CFileDialog(...);
pFD->DoModal();
.
.
delete pFD;

Re: CFileDialog Problem breakpoint int 3

David Crow6-Mar-13 3:22

David Crow

6-Mar-13 3:22

AbbeytekMD wrote:
There's a known problem with CFileDialog crashing

It was actually related to trying to use a CFileDialog object, which references m_pMainWnd, in a dialog-based app after the main dialog had been dismissed.

DirectShow is "no show so far" - need basic help

Vaclav_4-Mar-13 7:18

Vaclav_

4-Mar-13 7:18

OK I did embark into world of DirectShow and ditched VFW.
All the code samples here is way over my head for now.
I got as far as “using SDK to build basic DirectShow”. It is in one of many SDK 's “help doc” MS puts out here and there about DirectShow. I am suppose to build basic DirectShow application and use it as accessible debug library. I must be dense, but I cannot figure how to do it.
I do not need full blown sample code, there are plenty of them here, but gentle nudge into right direction in building from SDK sample would be appreciated.
Thanks for your time.
Cheers Vaclav

Re: DirectShow is "no show so far" - need basic help

Richard MacCutchan4-Mar-13 22:57

Richard MacCutchan

4-Mar-13 22:57

Vaclav_Sal wrote:
but gentle nudge into right direction in building from SDK sample would be appreciated.

Create the sample project in Visual Studio and press the "Build solution" button. Without more information on what problems you are having it's difficult to suggest anything more.

Use the best guess

Re: DirectShow is "no show so far" - need basic help

SoMad4-Mar-13 23:49

SoMad

4-Mar-13 23:49

I can understand your frustration Vaclav. At first it can seem daunting, but it really is mostly a matter of navigating through a bunch of COM interfaces. Once you get past that, it is not that bad.

Assuming you have read or at least skimmed through the DirectShow Reference[^], I would advice you to get your feet wet using this page: http://msdn.microsoft.com/en-us/library/windows/desktop/dd377566(v=vs.85).aspx[^]
And move on to this page: http://www.geekpage.jp/en/programming/directshow[^] - go to the "Video Capture" section.

Don't give up Smile | :)

Soren Madsen

"When you don't know what you're doing it's best to do it quickly" - Jase #DuckDynasty

modified 5-Mar-13 14:17pm.

JUST update Re: DirectShow is "no show so far" - need basic help

Vaclav_7-Mar-13 5:03

Vaclav_

7-Mar-13 5:03

Two reasons for this update.
Soren, I did not delete my last post, I guess gremlins at work.
Second, I am making progress using DirectShow, however, I just got past enumerating video devices and still struggling with DirectShow overall concept.
I just love MS inventing all these therms with very terse explanations – graph, filter , bag, moniker etc.
Old fashioned flow chart would IMHO work much better than MS one pages samples which are not tied together.
The most confusing are the VMR options – windowless or with window?
And when you do search all you get is reference to Window7, back paddling to XP as I do is inevitable.
But eventually I'll get
Thanks for your help.
Cheers Vaclav

How to adjust Bitmap onto a picture control in mfc.?

mbatra314-Mar-13 2:01

mbatra31

4-Mar-13 2:01

Hi,

I have Dialog in a Property Sheet. I have a picture control on that dialog box. I have a Bitmap which I want to use on that Picture control. I am using the below code for this part:

if(::IsWindow(m_CapScreen.m_hWnd ))
{
    tempbmp.LoadBitmapW(IDB_BMP_VIDEO_SCREEN_BOX);
    tempbmp.GetBitmap (&bm);
    m_CapScreen.MoveWindow( rt.left + 51, rt.top + 25, m.bmWidth, bm.bmHeight, 1 );
    tempbmp.DeleteObject();
}

where m_CapScreen in a variable declared for picture control.

When I change the position of the picture control, the Bitmap Image doesn't move with the picture control. It will remain at a fixed position.

The "Type" property of Picture control is set to "Frame".

Any help will be appreciated.

Regards,
Mbatra

Re: How to adjust Bitmap onto a picture control in mfc.?

Richard MacCutchan4-Mar-13 23:09

Richard MacCutchan

4-Mar-13 23:09

I don't see the connection between the bitmap and the picture control in the above code. Does this paint the bitmap in the correct place to start with?

Use the best guess

Re: How to adjust Bitmap onto a picture control in mfc.?

mbatra314-Mar-13 23:15

mbatra31

4-Mar-13 23:15

Hi,

"m_CapScreen" is defined as,

DDX_Control(pDX, IDC_CAPSCREEN, m_CapScreen);

which is a picture control, it type property has beent set to "Frame". So it will act as a frame to the bitmap positioned on the dialog.

Or else plz give me any suggestion if we can stretch a bitmap.
Whenever I change the resolution of the PC, I want to change the size of the bitmap accordingly. I can change the position and size of the controls, but prob is with the Bitmaps, BMP size I can't change. So I was looking out any way for this.

Regards,
Mbatra

Re: How to adjust Bitmap onto a picture control in mfc.?

Richard MacCutchan5-Mar-13 0:26

Richard MacCutchan

5-Mar-13 0:26

What MFC class is it and how are you adding the bitmap to it?

Use the best guess

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