C / C++ / MFC Discussion Boards

Re: how to update edit control text

NLMurthy12-May-05 7:12

NLMurthy

12-May-05 7:12

m_edit is of type CString and is a data memebr variable...

Re: how to update edit control text

Ravi Bhavnani12-May-05 7:16

Ravi Bhavnani

12-May-05 7:16

You need to call UpdateData().

/ravi

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Re: how to update edit control text

Priyank Bolia12-May-05 7:18

Priyank Bolia

12-May-05 7:18

Use: DDX_Text(pDX, IDC_EDIT1, m_edit);
and after assigning the values use:
m_edit = "Test";
UpdateData( false );

http://www.priyank.in/

Divide evenly

Anonymous12-May-05 6:45

Anonymous

12-May-05 6:45

Is there an easy way in C++ to tell if a number divides evenly?

Re: Divide evenly

Ravi Bhavnani12-May-05 7:04

Ravi Bhavnani

12-May-05 7:04

Smells like homework. See the "%" operator.

/ravi

My new year's resolution: 2048 x 1536
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Re: Divide evenly

Anonymous12-May-05 7:17

Anonymous

12-May-05 7:17

Thank you for reminding me about the modulus operator. I forgot about it.

Owner Draw Image List / Changing Image Colors

gpenno212-May-05 6:38

gpenno2

12-May-05 6:38

I was wondering if anyone knew how to owner draw and/or change color of images within an CImageList. I have tried lots of things none of which seem to work. I have a list of colors that relate to an index number. I would like to draw a bitmap/icon next to my corresponding data in a list view of the correct color.

I have tried creating a bitmap, drawing in a memory DC and then calling CImageList::Add() with my bitmap -- not working. I have tried, getting a bitmap from CImageList::GetImageInfo() and drawing in it -- not working... maybe I'm not doing something right? Anyone had any luck with this and possibly have some sample code?

Thanks

How to change text color letter by letter

Jared F.12-May-05 6:10

Jared F.

12-May-05 6:10

I've researched this topic on my compiler, microsoft visual studio, and I've done everything that the tutorial said to do, but I can't get it to work. i want to have colors cycling through each of the letters in a certain sentence, lets say..."hello." I'd want two or three colors to cycle left to right at a certain interval in which I set. the tutorial said I have to set some sort of table or something. thanks.

dudeoffrance

Re: How to change text color letter by letter

David Crow12-May-05 6:39

David Crow

12-May-05 6:39

Is this even close to what you are after?

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: How to change text color letter by letter

Jared F.20-May-05 5:43

Jared F.

20-May-05 5:43

close enough. That would be good too. But i was looking for being able to change each letter's color, but that would be nice too.

dudeoffrance

Re: How to change text color letter by letter

David Crow20-May-05 7:28

David Crow

20-May-05 7:28

dudeoffrance wrote:
But i was looking for being able to change each letter's color...

Isn't that what the snippet I showed achieved? Confused | :confused:

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: How to change text color letter by letter

Jared F.2-Jun-05 6:17

Jared F.

2-Jun-05 6:17

when i try to open it it wont show me whatever you have in mind, but if you know how to change each colors letter, please tell me how. It would be greatly appreciated.

dudeoffrance

looks easy, but dont work, just the first time

mikelon12-May-05 6:10

mikelon

12-May-05 6:10

Im try to make a simple application with window, when i
do this , the first time, it works very well, but when i save the c++ file, the compiler save like a space work or like a projec. when i try to use the program in another day,don´t work !!! : and have the next message:
(the programm have #include stdafx.h, don´t have precompiler headers activated, and don´t have erros (is very short the code !!! (the firs time, always work))

and have the next message:

DEBUG WIN32
COMPILING
stdafx.cpp
C:\Program files .....\include\winnt.h(1092) error C2146: Syntax error: missing ';' before identifier 'KSPIN_LOCK'
C:\Program files .....\include\winnt.h(1092) fatal error C1004: unexpected end of file found

im working with WinMe

so... help me !!!

Re: looks easy, but dont work, just the first time

David Crow12-May-05 6:35

David Crow

12-May-05 6:35

Assuming you have not touched the stdafx.cpp file, what does the stdafx.h file look like?

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Writing data to a Printer Device Context

leojose12-May-05 4:59

leojose

12-May-05 4:59

Hi all,

I have created a character buffer (char buff[]) which contains the data of a word document (the document contains text and images).
i would like to pass this data onto a printer. I have managed to get the handle of the printer using GetPrinterDC. but what i can't figure out is how am i going to pass my buffer data to this DC?
If given the handle of a window, we can find its DC and then pass that data to the printer DC using BitBlt, but in my case i don't have a handle, but only an array of characters which represent some image.
Can somone suggest a method?

String to Resource ID conversion

rgchezhian12-May-05 4:42

rgchezhian

12-May-05 4:42

I have Resource Id in string format.
ex ("IDC_EDIT").
How can i convert it into ID format to get the handle of the Edit box
using GetDlgItem.

if anybody come across the problem .pls let me know the solution.

Advance thanks,

Chezhian

Re: String to Resource ID conversion

Priyank Bolia12-May-05 4:57

Priyank Bolia

12-May-05 4:57

CEdit* pEDIT = (CEdit*)GetDlgItem(IDC_EDIT);

http://www.priyank.in/

Re: String to Resource ID conversion

rgchezhian12-May-05 5:15

rgchezhian

12-May-05 5:15

hi,

But i have the Id in string format "IDC_EDIT" instead IDC_EDIT

Re: String to Resource ID conversion

Maxwell Chen12-May-05 5:45

Maxwell Chen

12-May-05 5:45

MAKEINTRESOURCE(x)

???

Currently I don't have VC++ in my PC, not quite sure...

----------------
CEdit* pEDIT = (CEdit*)GetDlgItem(MAKEINTRESOURCE("IDC_EDIT"));

Maxwell Chen

Re: String to Resource ID conversion

rgchezhian12-May-05 17:05

rgchezhian

12-May-05 17:05

I tried but it gives error

Re: String to Resource ID conversion

David Crow12-May-05 5:55

David Crow

12-May-05 5:55

rgchezhian wrote:
But i have the Id in string format "IDC_EDIT" instead IDC_EDIT

Why? You should have a line in the project's resource.h file similar to:

#define IDC_EDIT    123

You should then have something comparable to the following in the project's .rc file:

IDD_MY_DIALOG DIALOG DISCARDABLE  0, 0, 423, 127
BEGIN
    EDITTEXT IDC_EDIT,38,83,40,14,ES_AUTOHSCROLL
END

Then you can use Priyank's suggestion.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

AVIFile functions and ffdshow problems

Tam98765432112-May-05 4:18

Tam987654321

12-May-05 4:18

I've written a small app that opens a divx avi file and displays the frames. It uses AVIFile operations, AVIFileOpen, AVIStreamGetFrameOpen, etc. It worked ok when I had divx codec installed.

I unistalled the divx codec and installed ffdshow, but now I can't get any frames from the avi file. AVIStreamGetFrameOpen fails, which I think means it can't find the codec to uncompress the video.

I can open the avi in Windows Media Player ok, gSpot reports that it uses the ffdshow decoder, but I can't get my app to work.

Anyone know what's happening here?

Re: AVIFile functions and ffdshow problems

Andrew Kirillov12-May-05 7:02

Andrew Kirillov

12-May-05 7:02

Hello

Media Player is playing your file using DirectShow, but you are trying to play it using Vide for Windows. It's not the same. The list of supported codecs can differ for DX and VfW.

May be uninstalling ffdshow, you've uninstalled VfW version of the codes, or may be it was unregistered somewhere.

With best regards,
Andrew

Re: AVIFile functions and ffdshow problems

Tam98765432112-May-05 11:30

Tam987654321

12-May-05 11:30

I've managed to get the vfw codec enabled ( didn't realise there were Configuration options you could set ), I can get the first frame of the avi ( index 0 ), when I attempt to get the second frame ( index 1 ), my program gets an exception.

Any ideas what's going on now?

Re: AVIFile functions and ffdshow problems

Andrew Kirillov12-May-05 21:48

Andrew Kirillov

12-May-05 21:48

Hello, Thomas

To say the truth I don't know what is the problem now. May be there is something wrong with VfW. You know, it's very tricky. It's much better to use DX if it is possible. It's hard say what is the problem without the code.

By the way. I was using VfW too. You can look at my article at CodeProject "Motion Detection Algorithms". But it was written on C# and all VfW functions was interoped and then I've created two classes: AVIReader and AVIWriter. If you are familiar with C# you can try my library. If it will work with your file, I can send you the code of it in C#.

With best regards,
Andrew

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