C / C++ / MFC Discussion Boards

CPallini5-Jan-07 22:02

5-Jan-07 22:02

The number is 32767 (16 bit signed int maximum value).

Look at LB_INITSTORAGE Message in MSDN[^].

It refers to ListBoxes, but I think it also applies to ComboBoxes.

hope that helps

-- modified at 4:44 Saturday 6th January, 2007

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.

Re: combo box in wndows 98?

Cristian Amarie6-Jan-07 2:06

Cristian Amarie

6-Jan-07 2:06

You can't store 70000 items. (Anyway is impractical to let user choose from 70000 items in a combobox - that's a lot of unique keys by the way).
You may consider using a virtual listbox or virtual listview to store data.
Alternatively, you may consider usage a "view|scroll" mechanism to store and display (i.e. your combo will display only a part of data - view - that will scroll depending on what user does in combo); possibly a dictionary-oriented will do it, or using partitions of data. Good luck anyway.

Nuclear launch detected

Re: combo box in wndows 98?

Bram van Kampen6-Jan-07 16:27

Bram van Kampen

6-Jan-07 16:27

The Maximum Number of Items you can store in a Combo box = 32767. This has nothing todo with WIN98, if it is the Not same in XP or 2000 etc that's a fluke. (Never had occasion to try it)! But Why that much Data! Think about Usability! If it is that large( Like for arguments sake, you are preparing an alphabetic Telephone List for the Entire World, you should carry out Pre-Selection, e.g.Country,County, Town, combined with Other Criteria.) NoOne is going to scroll up a list of 70000 entries. If at the other hand you consider it essential to have that nymber of entries, and if you are aware that it runs on those quoted systems, you specify same under 'Minimum System Requirements'

LateNightsInNewry

SSL Connection

bahram_cho5-Jan-07 20:27

bahram_cho

5-Jan-07 20:27

Hi,

I am using Winsock2.0 and as seen in help everywhere, for using SSL with it, the function 'setsockopt' can be used with certain flags SO_SECURE, SO_SEC_SSL etc.

But on WindowsXP, in header file Winsock2.h, there is nothing like these flags.

Can't I do SSL with Winsock2.0 on Visual Studio6.0
Is there any other way?

Regards

Re: SSL Connection

Mark Salsbery6-Jan-07 6:07

Mark Salsbery

6-Jan-07 6:07

SSL isn't supported on Windows sockets.

You can use Security Support Provider Interface (SSPI)[^] for SSL,
although it doesn't come with windows (the SSL part I mean).

So, yes you can do it but it's not included with Windows.

Mark

How can i use Image Magic in vc++? [modified]

$uresh $hanmugam5-Jan-07 18:43

$uresh $hanmugam

5-Jan-07 18:43

Hi All,

As i installing the Image Magic Dynamic library of Binary release and i had create a vc++ project,which has one dialogbox with in one button like magick,when i clicked the button a below block of code will be execute...

void SampleDlg::Onmagick()
{

Image image;
try {

image.read( "c:\\girl.gif" );

image.write( "c:\\x.gif" );
}
catch( Exception &error_ )
{
MessageBox(error_.what());

}

}

I got one runtime error when the image.read() will be execute...

Unhandled exception at 0x10023955 in ImgPros.exe: 0xC0000005: Access violation writing location 0x78eed7c9.

Now i using visual studio 8.
Anyone knows the reason of this error help me..

Thankx more in advance....

-- modified at 0:48 Saturday 6th January, 2007

Re: How can i use Image Magic in vc++?

Hamid_RT5-Jan-07 19:02

Hamid_RT

5-Jan-07 19:02

Are you sure you enter correct path and if you use of other files like bmp did you get this error?

WhiteSky

Re: How can i use Image Magic in vc++?

$uresh $hanmugam7-Jan-07 20:45

$uresh $hanmugam

7-Jan-07 20:45

Hi whitesky,
yah i am sure that just i read a .jpg image. I think here is the problem that is InitializeMagic() function.

why can we call this funtion and which path is send to this function as a parameter...

But one thing i had successfully run on the console application of win32, within the same code....

So, what is the real problem...please tell me...

Re: How can i use Image Magic in vc++?

Hamid_RT7-Jan-07 21:36

Hamid_RT

7-Jan-07 21:36

I didnt use of this library but check return values of InitializeMagic

WhiteSky

Re: How can i use Image Magic in vc++?

Christian Graus5-Jan-07 21:58

Christian Graus

5-Jan-07 21:58

If you just want to read gif, jpg, etc, use GDI+, it's far less painful and far better documented.

Christian Graus - C++ MVP

'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert

Re: How can i use Image Magic in vc++?

$uresh $hanmugam7-Jan-07 20:50

$uresh $hanmugam

7-Jan-07 20:50

Sorry whitesky,

yah i am sure that just i read a .jpg image. I think here is the problem that is InitializeMagic() function.

why can we call this funtion and which path is send to this function as a parameter...

But one thing i had successfully run on the console application of win32, within the same code....

So, what is the real problem...please tell me...

Re: How can i use Image Magic in vc++?

Hamid_RT7-Jan-07 21:38

Hamid_RT

7-Jan-07 21:38

Hey his name is Christian Graus not whitesky Big Grin | :-D

WhiteSky

How to use CWnd function from HWND?

Max++5-Jan-07 18:07

Max++

5-Jan-07 18:07

I use SPY++ find HWND from the window that I want to control.
if I want to access that window by using CWnd function.
How I do this.

Re: How to use CWnd function from HWND?

Eytukan5-Jan-07 18:16

Eytukan

5-Jan-07 18:16

Use the member m_hwnd

<br />
	CWnd cwnd;<br />
	cwnd.m_hWnd =(HWND)0x00120112; //The HWND you got from SPY++<br />
	cwnd.ShowWindow(SW_MAXIMIZE); //test<br />

Code-Frog:So if this is Pumpkinhead. Time for him to run and hide. It's an interesting thought really.

Re: How to use CWnd function from HWND?

Hadi Dayvary5-Jan-07 18:42

Hadi Dayvary

5-Jan-07 18:42

Why you don't find it yourself without Spy++?
Do it with CWnd::FindWindow() or ::FindWindow().
Good Luck

Re: How to use CWnd function from HWND?

Hamid_RT5-Jan-07 19:05

Hamid_RT

5-Jan-07 19:05

Do you want to get hwnd of a control on other programs?

WhiteSky

Re: How to use CWnd function from HWND?

Max++5-Jan-07 19:18

Max++

5-Jan-07 19:18

ํYes,I want to inject text data to dictionary program when I copy text data to clipboard.
I use this function

::SendMessage(hwnd,WM_SETTEXT,0,(LPARAM)pchData);

Re: How to use CWnd function from HWND?

Hamid_RT5-Jan-07 20:57

Hamid_RT

5-Jan-07 20:57

A small code(I suppose you run Notepad)

char *MY="Hello"; 
HWND hWnd = ::FindWindow("Notepad", NULL);
CWnd *hWndEdit=FindWindowEx(hWnd,NULL,"Edit",NULL);
hWndEdit->SendMessage(WM_SETTEXT,0,(long)MY);

with this code you insert Hello to notepad now if you want to read this text of NotePad first you must determine length in characters of window

LRESULT l=hWndEdit->SendMessage(WM_GETTEXTLENGTH,0,0);

then you can get text of notepad

hWndEdit->SendMessage(WM_GETTEXT,l+1,(long)MY2);

Is it helpfuls? Smile | :)

WhiteSky

Re: How to use CWnd function from HWND?

Max++5-Jan-07 22:20

Max++

5-Jan-07 22:20

After I inject text to target Edit Ctrl I have to click on it and press enter key then the dictionary program will work.
So, I want to try to send the message that user press enter key after inject text to target Edit Ctrl.

What this message is?

Re: How to use CWnd function from HWND?

Hamid_RT6-Jan-07 17:30

Hamid_RT

6-Jan-07 17:30

See PreTranslateMessage

WhiteSky

HOW TO PUT THE PROGRESS BAR CONTROL IN LISTVIEW IN WIN32 API

amitmistry_petlad 5-Jan-07 17:21

amitmistry_petlad

5-Jan-07 17:21

Well , i have put the control dynamically but each time when i add new item in the list view from the fileopen dialog it's place the control(progress bar) at the same postion and when i select entire row of the listview it goes disapper and goes behind selection(might not seen).

so i need to display the progressbar in such a way that when i add an item in the list view it will show with subitem in the listview.
and when event fired it shows the progress bar in the progress mode.

i am using win32 API on .net 2005. OS SERVER 2003.
i have seen some demos but they are realted with MFC.

Thank you

AMIT

error C3867 in MFC

FredrickNorge5-Jan-07 14:40

FredrickNorge

5-Jan-07 14:40

i try to start another thread with this code

CGLMFCDlg * MyThread= new CGLMFCDlg;
_beginthread(MyThread->Thread, 0,NULL);
delete MyThread;

the new thread is a void function, i get a error message as follows:

error C3867: 'CGLMFCDlg::Thread': function call missing argument list; use '&CGLMFCDlg::Thread' to create a pointer to member

Any sugestions on how i can solve this?

thanks

Re: error C3867 in MFC

Mark Salsbery5-Jan-07 14:44

Mark Salsbery

5-Jan-07 14:44

For an address of a member function the compiler is expecting you to use the address-of
operator:

_beginthread(&MyThread::Thread, 0,NULL);

Re: error C3867 in MFC

FredrickNorge5-Jan-07 14:49

FredrickNorge

5-Jan-07 14:49

that gives me an error like this error C2664: '_beginthread' : cannot convert parameter 1 from 'void (__thiscall CGLMFCDlg::* )(void)' to 'void (__cdecl *)(void *)'
1> There is no context in which this conversion is possible

Re: error C3867 in MFC

Mark Salsbery5-Jan-07 15:32

Mark Salsbery

5-Jan-07 15:32

The thread proc needs to be defined correctly. For a member function it needs to be declared
static.

Mark

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