C / C++ / MFC

27-Aug-09 2:42

hello all, i have a problem need your help...
I show amount data in virtual listctrl fast,but i click a item ,the item text will be recovered ,,i want to fix the text in each item when them showed like in real mode.
I search much,,but i didn't get the solution,,i need your help,thanks.

David Crow27-Aug-09 3:05

27-Aug-09 3:05

yiyinkuang wrote:
I show amount data in virtual listctrl fast...

I'm with you so far.

yiyinkuang wrote:
...but i click a item ,the item text will be recovered...

Are you talking about using GetItemText() or GetItem() in response to a LVN_ITEMCHANGED message?

yiyinkuang wrote:
...i want to fix the text in each item when them showed like in real mode.

This is unclear in so many ways.

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yiyinkuang27-Aug-09 3:46

27-Aug-09 3:46

yes，，i try to use GetItemText store item text ,,but GetItemText will trigger the item text change

David Crow27-Aug-09 4:10

27-Aug-09 4:10

yiyinkuang wrote:
try to use GetItemText store item text...

Store it where, in the list control or some data structure?

yiyinkuang wrote:
but GetItemText will trigger the item text change

Nonsense (assuming you are referring to the LVN_ITEMCHANGED message). That would only happen if you used SetItemText().

yiyinkuang27-Aug-09 4:25

27-Aug-09 4:25

thank you,,use GetItemText will send LVN_GETDISPINFO,,and function OnGetdispinfoList will change the item text

David Crow27-Aug-09 4:58

27-Aug-09 4:58

yiyinkuang wrote:
...function OnGetdispinfoList will change the item text

In a manner of speaking, yes.

Maximilien27-Aug-09 3:23

Maximilien

27-Aug-09 3:23

(assuming I understand what you want)

If you have a "virtual" list ctrl (CListBox or CListCtrl?), then you should have an underlying data structure somewhere that holds the data that is displayed by the list.

In you derived list ctrl control, there should be a method to display each item individually something like DrawItem); usually, it's in that method that you fetch the data from your data structure and "format" it correctly to be displayed in the list ctrl.

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yiyinkuang27-Aug-09 4:01

How to change background color of button on dialog box in mfc

27-Aug-09 4:01

thank you ,i have a struct for displaying ,,but the struct data updata dynamic,,i can not alloc memory as the image for dispalyed data,,because the data is too huge.

pinky888427-Aug-09 1:50

pinky8884

27-Aug-09 1:50

How to change background color of button on dialog box in mfc

Project Engineer

Re: How to change background color of button on dialog box in mfc

David Crow27-Aug-09 3:12

Re: How to change background color of button on dialog box in mfc

27-Aug-09 3:12

Start by searching for WM_CTLCOLORBTN.

Hamid_RT27-Aug-09 4:53

Hamid_RT

27-Aug-09 4:53

Color Button[^].

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

Reading metadata of files

emmmatty127-Aug-09 0:54

emmmatty1

27-Aug-09 0:54

Hi,
How can i read the meta-data information of files using VC++. I mean the information we see when we change the folder view to details. eg:- Author of MS-Word document etc.

thanks,
J.

Re: Reading metadata of files

Stuart Dootson27-Aug-09 1:00

serious problem with wininet.dll of IE8 ...

27-Aug-09 1:00

Voila[^]

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

dharani27-Aug-09 0:42

dharani

27-Aug-09 0:42

Hello all
I have a big problem after upgrading to IE8 . In our filetransfer module we are using wininet_connect(..) to establish connections via gSoap client . It has been working fine till we upgraded to IE8 with wininet.dll version 8.0 . The problem is that the wininet_callback is getting INTERNET_STATUS_CONNECTION_CLOSED message due to which gSoap client is disconnecting . This does not happen in IE6 and its wininet.dll version ...
Has anyone faced this problem ?

redindian

_except

durban227-Aug-09 0:30

durban2

27-Aug-09 0:30

Why don't execution function
MessageBox(L"DIVIDE BY ZERO"); ?
The code is skipping.

#include "Excpt.h"
#include "Winnt.h"
#include "cmath"

float fResult; // Bennet, pg.136
//int x,y;
float x,y;
// x = 5;
// y = 0;

x = 5.0;
y = 0.0;
_try // __try
{
fResult = x/y;
}
//__except (GetExceptionCode() == EXCEPTION_FLT_DIVIDE_BY_ZERO)
_except (GetExceptionCode() == EXCEPTION_FLT_DIVIDE_BY_ZERO)
{
MessageBox(L"DIVIDE BY ZERO");
}

Re: _except [modified]

Stuart Dootson27-Aug-09 0:51

Disable title bar click to restore window

27-Aug-09 0:51

You need to turn on floating-point exceptions first...

Try #includeing <float.h> and add this bit of code before you do the divide...

_controlfp(0, MCW_EM);

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

modified on Thursday, August 27, 2009 10:48 AM

Abinash Mohanty27-Aug-09 0:05

Abinash Mohanty

27-Aug-09 0:05

Hi all,

Can any body tell me how to disable restore on title bar click.

Thanks

Re: Disable title bar click to restore window

Stuart Dootson27-Aug-09 0:57

How to do CoCreateInstance without CLSID

27-Aug-09 0:57

I presume you mean restoring a window from a minimized state?

If so, then your main window needs to handle WM_SYSCOMMAND[^] and call the inherited WndProc EXCEPT when the wParam == SC_RESTORE.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Waterfall display

su_marvel26-Aug-09 22:20

su_marvel

26-Aug-09 22:20

Hi,

I need help in creating a waterfall display of my image data stored in a buffer. The image needs to be displayed scrolling down the screen as its being acquired from the camera.
I am using visual studio c++ windows forms.
Can someone please help me to figure out how to achieve this display?

Thanks in advance

Re: Waterfall display

Rajesh R Subramanian26-Aug-09 22:30

Rajesh R Subramanian

26-Aug-09 22:30

su_marvel wrote:
I am using visual studio c++ windows forms.

I have a tough time figuring out your query, but thankfully it doesn't belong here. You can post managed c++ queries here[^]

It is a crappy thing, but it's life -^ Carlo Pallini

deadlyabbas26-Aug-09 22:00

deadlyabbas

26-Aug-09 22:00

Hi,
Following is the code I am trying to do

<#import "C:\\Program Files\\BOSS\\SUPPORT\\RealDWG\\cf2407.dll" rename_namespace("CADFilter")

AcRx::AppRetCode acrxEntryPoint (AcRx::AppMsgCode Msg,
void* AppId)
{
// local variables
int cindex;

CADFilter::NW_IDocument *m_pIDocument;
CLSID clsid;
CoInitialize (NULL);
HRESULT hr = CLSIDFromProgID(LPCOLESTR("NW_Document"), &clsid );
hr = CoCreateInstance( clsid, NULL,CLSCTX_ALL , __uuidof(CADFilter::NW_IDocument) , (void**)&m_pIDocument );
if(SUCCEEDED(hr))
{
AfxMessageBox(_T("Hi"));
}

}>
But I am getting an " HRESULT hr as an "Invalid class string"

Re: How to do CoCreateInstance without CLSID

Stuart Dootson26-Aug-09 22:16