How does CArray work? - C / C++ / MFC Discussion Boards

Re: vb.net to c++

Naveen25-Oct-07 15:49

Naveen

25-Oct-07 15:49

vikrant kpr wrote:
I need the given below code converted to c++

I didnt see any VB code in your post. Only a function declaration.??

nave

[OpenedFileFinder]

Re: vb.net to c++

vikrant kpr25-Oct-07 20:35

vikrant kpr

25-Oct-07 20:35

yeah that's it
this is working & when called changes the windows theme

Re: vb.net to c++

Hamid_RT25-Oct-07 20:40

Hamid_RT

25-Oct-07 20:40

Where's VB code?

Re: vb.net to c++

vikrant kpr25-Oct-07 20:45

vikrant kpr

25-Oct-07 20:45

Can this function declaration be converted to c++?
the function is calling a function with ordinal number 65 from uxtheme.dll

Re: vb.net to c++

JudyL_MD26-Oct-07 3:13

JudyL_MD

26-Oct-07 3:13

vikrant kpr wrote:
DWORD Ordinal = MAKELONG(0, 65);

Your parameters to MAKELONG are in the wrong order. Documentation says:

For MAKELONG:
DWORD MAKELONG (WORD wLow, WORD wHigh)

And for the 2nd parameter to GetProcAddress:
If this parameter is an ordinal value, it must be in the low-order word; the high-order word must be zero.

Judy

Re: vb.net to c++

vikrant kpr26-Oct-07 5:39

vikrant kpr

26-Oct-07 5:39

Tried that as well
no luck

Re: vb.net to c++

JudyL_MD26-Oct-07 5:48

JudyL_MD

26-Oct-07 5:48

Per example found here http://blogs.msdn.com/peterrosser/archive/2006/02/22/ExportedDllFunctions.aspx[^]

use
Proc = (FARPROC)GetProcAddress(hmodFonc, MAKEINTRESOURCEA(65));

Judy

How does CArray work?

acerunner31625-Oct-07 14:25

acerunner316

25-Oct-07 14:25

My app is crashing unexpectedly and I suspect that it is because of the CArray object I am using.

I have a CArray inside a structure, and I have an array of this structure.

For example:

struct type1
{
   unsigned char variable1;
   unsigned char variable2;
   CArray<float, float> DataPtTable;
   unsigned char variable3;
};
type1 myArray[5];

Now if I call myArray[2].DataPtTable.Add() or SetSize(), how is the memory allocated? I know it does get reallocated, but does that make calls to members of myArray[2].DataPtTable invalid since it is now pointing somewhere else? Or will it begin to overwrite into memory allocated for variable3, etc?

Thanks.

Re: How does CArray work?

Naveen25-Oct-07 15:45

Naveen

25-Oct-07 15:45

Are performing some operations like

type1 stMystruct1;<br />
type1 stMystruct2 = stMystruct1;

nave

[OpenedFileFinder]

Re: How does CArray work?

Mark Salsbery26-Oct-07 6:42

Mark Salsbery

26-Oct-07 6:42

The array object remains valid. The memory allocations and reallocations are
internal to the CArray class. That's the whole idea - so you don't have to
worry about it. Smile | :)

Mark

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

Re: How does CArray work?

acerunner31626-Oct-07 9:10

acerunner316

26-Oct-07 9:10

So the way I am using CArray is correct?
Then the app crashing must be something else. Dam, back to square one. Sigh | :sigh:

Re: How does CArray work?

Mark Salsbery26-Oct-07 9:19

Mark Salsbery

26-Oct-07 9:19

acerunner316 wrote:
So the way I am using CArray is correct?

From what you've posted, yes.

I can't see the stuff in angle brackets though...

struct type1
{
   unsigned char variable1;
   unsigned char variable2;
   CArray<float, float=""><span style="color: Red;"><???></span> DataPtTable;
   unsigned char variable3;
};
type1 myArray[5];</float,>

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

Re: How does CArray work?

acerunner31626-Oct-07 9:30

acerunner316

26-Oct-07 9:30

I have two CArray objects.

One is <WORD, WORD>
Other is <float, float>

I know there isn't a problem with that part of the declaration.

Re: How does CArray work?

Mark Salsbery26-Oct-07 9:34

Mark Salsbery

26-Oct-07 9:34

In that case, looks like there's a problem elsewhere.

Mark

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

Re: How does CArray work?

Nelek29-Oct-07 4:06

Nelek

29-Oct-07 4:06

Where does the programm crash? Use the debugger and write us some previous lines with the point of your failure.

Greetings.

--------
M.D.V.

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?

Help me to understand what I'm saying, and I'll explain it better to you

Wink | ;)

Window Redraw Problem ..

neil478125-Oct-07 12:47

neil4781

25-Oct-07 12:47

Hello,

I have a tab control, contents of which are displayed by a CDialog. This dialog contains different controls on it. I am having following issues :-

1) After I run my app, if I put another window on top of it (say calc.exe) and switch back to my app, I see the area convered by calc.exe is erased!

2) I have a menu which pops up if I do a right control on the header of my Clistctrl .. after the menu goes away, the area covered by the menu is erased and comes back only when I move my mouse over the area...

3) If I hit enter the contents on the tab control (which are displayed by CDialog) go away completely!

Thank you in advance for your help...

Re: Window Redraw Problem ..

santhoshv8425-Oct-07 18:30

santhoshv84

25-Oct-07 18:30

Hello,

You can try to use this message,

BEGIN_MESSAGE_MAP(CButtonDlg, CDialog)
ON_WM_ERASEBKGND()
END_MESSAGE_MAP()

BOOL CDialog::OnEraseBkgnd(CDC* pDC)
{
// TODO: Add your message handler code here and/or call default

return CDialog::OnEraseBkgnd(pDC);
}

This member function is called to erase the background when any changes happens in window like resize or move.
I guess i will work.... Try this.... Good Luck...

Thanks and Regards.
SANTHOSH V

Re: Window Redraw Problem ..

Nishad S25-Oct-07 19:09

Nishad S

25-Oct-07 19:09

santhoshv84 wrote:
BOOL CDialog::OnEraseBkgnd(CDC* pDC)
{
// TODO: Add your message handler code here and/or call default

return CDialog::OnEraseBkgnd(pDC);
}

This will not have any effect. This is same as you are not mapping it...

- NS -

Re: Window Redraw Problem ..

Nishad S25-Oct-07 19:20

Nishad S

25-Oct-07 19:20

Why did you repost, when my question was not answered yet?

See this[^]

- NS -

receive(socket) before send(socket)

nhathoang25-Oct-07 11:42

nhathoang

25-Oct-07 11:42

I have a problem with receive and send in MFC:
I have a program which named Server and a Client named program,After Client connect to Server and Two sides begin traslate data through socket,but when My Server goto receive before then Server Program error,I don't know a method to decide,please help me.
I live In VietNam and this is my homework,please help me

a windows API function to convert JPG into BMP [modified]

V_shr25-Oct-07 10:21

V_shr

25-Oct-07 10:21

topic says all Big Grin | :-D

is there any?
thnx

Re: an API to convert JPG to BMP

C^hris L^osinger25-Oct-07 10:23

C^hris L^osinger

25-Oct-07 10:23

there are dozens.

did you try searching this site? or Google?

image processing toolkits | batch image processing

Re: an API to convert JPG to BMP

V_shr25-Oct-07 10:26

V_shr

25-Oct-07 10:26

i searched ... nothing , i wonder maybe i use bad key words !

Re: an API to convert JPG to BMP [modified]

V_shr25-Oct-07 10:31

V_shr

25-Oct-07 10:31

actually i searched in articles for "jpg to bmp API" the answers was s.th else ! for example changing icons to ... !!! i also looked in my API book but i couldnt find , man plz hlp

Re: a windows API function to convert JPG into BMP

Mark Salsbery25-Oct-07 11:09

Mark Salsbery

25-Oct-07 11:09

If you don't need to write the JPEG decompression yourself,
here's the simplest way I know:

#include <atlimage.h>
...
// (error handling omitted)
CImage image;
image.Load(_T("c:\\some.jpg"));
image.Save(_T("c:\\some.bmp"), ImageFormatBMP);

Mark

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

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