Re: saving the screen - C / C++ / MFC Discussion Boards

Re: How to store and retrieve the image into a file.

Hamid_RT18-Aug-08 4:51

Hamid_RT

18-Aug-08 4:51

If you want to save a your draw on the bitmap file see here[^].

saving the screen

Chandrasekharan P17-Aug-08 23:13

Chandrasekharan P

17-Aug-08 23:13

i am creating a dialog based application. in my application there is a requirement where i have to save the page as it is in jpg extension. and it needs to get saved in a location. please give me some leads for this.

thanks in advance.

Re: saving the screen

Rajesh R Subramanian17-Aug-08 23:23

Rajesh R Subramanian

17-Aug-08 23:23

There are two tasks:

1. Take a screen capture
2. Save it to a file

You can get started here:

1. Various methods for capturing the screen[^]

2. Saving it to a file, I think should be relatively easy.

Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal - Friedrich Nietzsche

.·´¯`·->Rajesh<-·´¯`·.
[Microsoft MVP - Visual C++]

Re: saving the screen

Hamid_RT18-Aug-08 4:54

Hamid_RT

18-Aug-08 4:54

Is this[^] helpful?

Re: saving the screen

vikas amin18-Aug-08 7:58

vikas amin

18-Aug-08 7:58

you can use the bitblt and getdc to capture a part of the screen to a picture control. Say you can try using to get the desktop by getdesktopwindow()

Vikas Amin

My First Article on CP" Virtual Serial Port "[^]

modified on Thursday, July 24, 2008 5:33 PM

Re: saving the screen

vikas amin18-Aug-08 7:59

vikas amin

18-Aug-08 7:59

may be this article can be help full to u
http://support.microsoft.com/kb/210108[^]

Vikas Amin

My First Article on CP" Virtual Serial Port "[^]

modified on Thursday, July 24, 2008 5:33 PM

Re: saving the screen

Chandrasekharan P18-Aug-08 19:05

Chandrasekharan P

18-Aug-08 19:05

thanks for the reply. but the code is in VB and u need to open MSPAINT for saving it. i dont want the user to give such an option. once agaain thanks for the reply

Re: saving the screen

vikas amin19-Aug-08 4:25

vikas amin

19-Aug-08 4:25

check this link
http://forums.msdn.microsoft.com/en-US/vcgeneral/thread/ffec92fb-2b45-42c9-8017-86cd18753c11[^]

http://www.codeproject.com/KB/GDI/barry_s_screen_capture.aspx

http://www.codeproject.com/KB/graphics/screen_capturing.aspx

http://www.codeproject.com/KB/graphics/ScreenCaptureByHolzhauer.aspx
[^]

In .net we have CopyFromScreen Method
http://msdn.microsoft.com/en-us/library/system.drawing.graphics.copyfromscreen.aspx[^]

Vikas Amin

My First Article on CP" Virtual Serial Port "[^]

modified on Thursday, July 24, 2008 5:33 PM

Re: saving the screen

vikas amin19-Aug-08 5:04

vikas amin

19-Aug-08 5:04

I was missing one more api PrintWindow but after that you need to save it,may be you can use this to print to a image box and then save it as jpg

http://msdn.microsoft.com/en-us/library/ms535695.aspx[^]

Vikas Amin

My First Article on CP" Virtual Serial Port "[^]

modified on Thursday, July 24, 2008 5:33 PM

Navigating Between Buttons

T.RATHA KRISHNAN17-Aug-08 23:11

T.RATHA KRISHNAN

17-Aug-08 23:11

Hi!
I've to navigate between two Buttons. i.e If I press the Tab key the focus should change from one Button to the other. How to do this?

Re: Navigating Between Buttons

Chandrasekharan P17-Aug-08 23:15

Chandrasekharan P

17-Aug-08 23:15

set the tab order. u can do it using the layout option in the menu.

Re: Navigating Between Buttons

Hamid_RT18-Aug-08 4:54

Hamid_RT

18-Aug-08 4:54

you can set Tab Order on the dialog forum you must be press Ctrl+D.

How To add VB ActiveX file into VC++ program???

savitri17-Aug-08 22:56

savitri

17-Aug-08 22:56

Hello EveryOne,

Hi..I am doing one vc++ program in that i want to call VB OCX file.I am doing that but when i am accessing the funtions from the ocx or activex control it is giving error.in VB OCX program function is like this:
Public Sub Processattendacne(strProcess As Integer)
lblProcessing.Caption = strProcess
End Sub
when i am adding know then this function is like this:
void C_UserControl1::Processattendacne(BSTR* strProcess)
{
static BYTE parms[] =
VTS_PBSTR;
InvokeHelper(0x60030000, DISPATCH_METHOD, VT_EMPTY, NULL, parms,
strProcess);
}
I am calling this function in my program it is giving parameter missmatch error..like this..
void CPassingVarsDlg::OnGetIt()
{
// TODO: Add your control notification handler code here
CString str='s';
m_UserVariable.Processattendacne(str);
}
ERROR IS LIKE THIS:
:\Program Files\Microsoft Visual Studio\My Projects\PassingVars\PassingVarsDlg.cpp(177) : error C2664: 'Processattendacne' : cannot convert parameter 1 from 'class CString' to 'unsigned short ** '
No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
Error executing cl.exe.

Please Help me out to solve this problem.I am not getting which datatype i have to use to resovle this problem.

Reply me As Soon As Possible..
Thanks In Advance,
Savitri

Re: How To add VB ActiveX file into VC++ program???

CPallini17-Aug-08 23:33

CPallini

17-Aug-08 23:33

savitri wrote:
Reply me As Soon As Possible..

[military tone]
Of course, Sir!
[/military tone]

If the function requires a pointer to a BSTR object, why are you passing a CString instance?
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[Image resize DLL]

Re: How To add VB ActiveX file into VC++ program???

savitri18-Aug-08 0:22

savitri

18-Aug-08 0:22

Hii..
If i took variable of type BSTR* then also it is giving error...please tell me what type i have to use...I am not getting how to use this give me some suggestions please..

Thanks in advance,
Savitri..

Re: How To add VB ActiveX file into VC++ program???

CPallini18-Aug-08 0:58

CPallini

18-Aug-08 0:58

Please show your (updated) code.
Smile | :)

Re: How To add VB ActiveX file into VC++ program???

savitri18-Aug-08 2:09

savitri

18-Aug-08 2:09

ok i am giving u activex code and aslo my program code ..
This activex is in VB..my variable of type string in vb but after adding activex it is converting as BSTR.
ActiveX code is :
void C_UserControl1::Processattendacne(BSTR* strProcess)
{
static BYTE parms[] =
VTS_PBSTR;
InvokeHelper(0x60030000, DISPATCH_METHOD, VT_EMPTY, NULL, parms,
strProcess);
}
My code is :
void CPassingVarsDlg::OnGetIt()
{
// TODO: Add your control notification handler code here
CString str='s';
m_UserVariable.Processattendacne(str);
}
please tell me how to solve this problem..

Thanks Alot
Savitri

Re: How To add VB ActiveX file into VC++ program???

CPallini18-Aug-08 2:14

CPallini

18-Aug-08 2:14

savitri wrote:
CString str='s';
m_UserVariable.Processattendacne(str);

I don't see any BSTR * variable in the above code.
Smile | :)

Re: How To add VB ActiveX file into VC++ program???

savitri18-Aug-08 2:28

savitri

18-Aug-08 2:28

first i used BSTR* only but that time aslo giving error..so i changed again to CString only..I am fed up of this VB ocx..or tell me steps of adding vb dll into vc program..please tell me i am getting tension..

Thanks in advance,
savitri

Re: How To add VB ActiveX file into VC++ program???

CPallini18-Aug-08 2:42

CPallini

18-Aug-08 2:42

Probably you have to change the following lines

CString str='s';
m_UserVariable.Processattendacne(str);

to something similar to (error checking omitted)

BSTR bstr = SysAllocString(L"s");
m_UserVariable.Processattendacne(&bstr);
SysFreeString(bstr);

Re: How To add VB ActiveX file into VC++ program???

savitri18-Aug-08 3:16

savitri

18-Aug-08 3:16

Thanku very much..User technich is working properly...now i am inspered by you to learn more new things..
Please will u tell me how to take record set data from ocx and send to ocx..
in activex it is like this :
void C_UserControl11::Processattendacne(LPDISPATCH* rs, LPDISPATCH* rs1, BOOL* blnprocess)
{
static BYTE parms[] =
VTS_PDISPATCH VTS_PDISPATCH VTS_PBOOL;
InvokeHelper(0x60030000, DISPATCH_METHOD, VT_EMPTY, NULL, parms,
rs, rs1, blnprocess);
}
please tell me how to do this...
give me some suggestions please...
It is very helpful for me...

Thanks aLot..
Savitri

Building an audio encoder that ecodes mp3 to a custom format (*.btm) + the Decoder

jakeblake17-Aug-08 22:56

jakeblake

17-Aug-08 22:56

I have this question. I'm an Info Tech student in Uni. We were assigned to a project that involves audio.

We wish to write a new audio encoder which transforms/encodes an mp3 file to a custom format, say *.btm.

And also a plug-in which will be able to decode the *.btm file and is compartible with any media player as long as the plug-in is there.

I was wondering if you could give me a tip on how it works and how to go about it.

We are working on a school project with my team mates.

Please i would appreciate it if you send me some helpful codes (C++) as well.

Thanx you.
Samson Akanet.

Re: Building an audio encoder that ecodes mp3 to a custom format (*.btm) + the Decoder

liquid_18-Aug-08 10:58

liquid_

18-Aug-08 10:58

Try to search http://sourceforge.net[^] with the name lame. This is a library for converting mp3 files and is, for sure, in source code.

Re: Building an audio encoder that ecodes mp3 to a custom format (*.btm) + the Decoder

jakeblake18-Aug-08 21:56

jakeblake

18-Aug-08 21:56

Thanks alot, it was helpful

Winsock: CSocket or something else?

bigcivilmelon17-Aug-08 22:50

bigcivilmelon

17-Aug-08 22:50

Hi,

The CSocket class has been widely publicised as being buggy: the advice has historically been to use a 3rd party control or write your own.

Has the CSocket class with MFC supplied with VS2008 been updated, or is the current advice to use a 3rd party control / write your own?

Can anyone reccommend a 3rd party / free TCP wrapper? (Yes I'm aware there are plenty of example applications here on CP, but which one is the best)

thanks,
Mark.

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