Loading a Delphi DLL into a VC++ application - C / C++ / MFC Discussion Boards

Re: Attach child toolbar to parent toolbar

Cedric Moonen18-Dec-08 2:57

Cedric Moonen

18-Dec-08 2:57

What do you mean ?

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Re: Attach child toolbar to parent toolbar

Pryabu18-Dec-08 18:11

Pryabu

18-Dec-08 18:11

I am having a main toolbar. Now i want to attach another toolbar at the end of main toolbar.

Re: Attach child toolbar to parent toolbar

Hamid_RT18-Dec-08 5:32

Hamid_RT

18-Dec-08 5:32

Roay wrote:
child toolbar to parent toolbar

I think you made a toolbar and also you have a standard toolbar on your program but what do you need exactly?

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 )

Re: Attach child toolbar to parent toolbar

Pryabu18-Dec-08 17:45

Pryabu

18-Dec-08 17:45

Yes.I am having a main toolbar. Now i want to attach another toolbar at the end of main toolbar.

How to get the message from a service

debonair12345618-Dec-08 1:00

debonair123456

18-Dec-08 1:00

can someone please help me out in this regrad..
im a newbie to c++ and first task is assigned for me..
i have a service running in the network which will send output in XML format..i have to fetch the command from the service and based on the data have to trigger a action in another application.

can i use socket communication programming in c++ to get the xml output or is there any other method i can use.. its very urgent please someone help me asap

Re: How to get the message from a service

Mark Salsbery18-Dec-08 6:46

Mark Salsbery

18-Dec-08 6:46

You may want to start with figuring out how the service is
providing the data you need...

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

Re: How to get the message from a service

debonair12345618-Dec-08 17:04

debonair123456

18-Dec-08 17:04

Thank you.. they have given in the manual that by sending commands,i ll be able get the response like this
<authorization isloggedin="Boolean" alarm="integer<br" mode="hold">Design=integer Operate=integer AC=integer/>

please help me Smile | :)

Loading a Delphi DLL into a VC++ application

Cronoz17-Dec-08 23:35

Cronoz

17-Dec-08 23:35

Hello,

I need to use a DLL which was written in Delphi in my VC++ windows forms application. However, Delphi doesn't generate a .LIB file when creating DLL's so I have to create a .LIB file manually. I have already written a .h file for the functions that I need to use. The .h code is shown below.

<br />
1	//File: CITRemote.h  <br />
2	extern "C" {  <br />
3	  <br />
4	__declspec(dllexport) void* __stdcall CITRemote_create(  <br />
5	   void *parameters );  <br />
6	  <br />
7	__declspec(dllexport) int __stdcall CITRemote_open(  <br />
8	   void* handle, void* parameters);  <br />
9	  <br />
10	__declspec(dllexport) int __stdcall CITRemote_close(  <br />
11	   void *handle );  <br />
12	}  <br />

From what I understand I need to create a .DEF file to generate a .LIB file with the LIB command: lib /def:CITRemote.def. The .DEF file I wrote is shown below.

<br />
1	;File: CITRemote.DEF  <br />
2	LIBRARY "CITREMOTE"  <br />
3	  <br />
4	EXPORTS  <br />
5	    CITRemote_open  <br />
6	    CITRemote_close  <br />
7	    CITRemote_create  <br />

The name of the DLL is CITRemote.dll and uses the STD calling convention. After I execute the LIB command, CITRemote.lib and object CITRemote.exp are created. I added the lib and exp file into my project in the 'Resource Files' filter. When i try to call for example the CITRemote_create function, I get the following error:

<br />
Linking... <br />
1>LINK : warning LNK4075: ignoring '/INCREMENTAL' due to '/LTCG' specification <br />
1>NTP checker.obj : error LNK2001: unresolved external symbol "extern "C" void * __stdcall CITRemote_create(void *)" (?CITRemote_create@@$$J14YGPAXPAX@Z) <br />
1>C:\Documents and Settings\Aartun\My Documents\Visual Studio 2008\Projects\NTP checker\Debug\NTP checker.exe : fatal error LNK1120: 1 unresolved externals <br />

So i guess the implementation of the function isn't found, thus meaning it doesn't link the DLL. But what am I doing wrong, did I miss something?

Thanks in advance.

Note: I'm using Visual Studio 2008 Proffesional and all the files(dll, lib, h, exp and def) are in the same directory.

Re: Loading a Delphi DLL into a VC++ application

Stuart Dootson18-Dec-08 0:41

Stuart Dootson

18-Dec-08 0:41

You want to change the CITRemote.h file to say __declspec(dllimport) rather than __declspec(dllexport).

You are specifying that you want to export those function from your Windows forms app. Then, when you link, it can't find an implementation for them - because the implementation is in the Delphi DLL....

As an aside - if you were using the linker packaged with GCC, you wouldn't need a .LIB file - it can link directly to DLLs. I've often wondered why Microsoft's linker didn't have that capability.

how to get accuracy as well as quick interface response

anilaabc17-Dec-08 21:57

anilaabc

17-Dec-08 21:57

i need accuracy as well as i have to interact several time with user interface .if i use multimedia timer for accuracy then it slows my interface response.how could i achieve both accuracy as well as quick response from interface??
i read about queue timer form msdn that it is accurate as well as do not stop window messaging .but when i used this,this is n't accurate..

Re: how to get accuracy as well as quick interface response

Stuart Dootson17-Dec-08 22:58

Stuart Dootson

17-Dec-08 22:58

If you want a responsive interface while doing some other activity at the same time no matter what that activity is, then you want to run the other activity in a different thread to the UI.

If you're using MFC, look up "worker threads" in the help. That should get you started.

Be warned, though - multi-threaded programming isn't easy. There are lots of pitfalls - deadlocks, bad synchronisation etc. Don't try anything too fancy, just keep your code simple.

Re: how to get accuracy as well as quick interface response

anilaabc18-Dec-08 18:10

anilaabc

18-Dec-08 18:10

thanks

CButton color change

Paulraj G17-Dec-08 21:55

Paulraj G

17-Dec-08 21:55

Hi...

How to change backgroungcolor and text color of CButton?(do not using seperate class)

can anyone please guide me?

Regards,

G.Paulraj

Re: CButton color change

Naveen17-Dec-08 22:34

Naveen

17-Dec-08 22:34

gnanapaul wrote:
How to change backgroungcolor and text color of CButton

You have to owner draw the button to change the back ground color and text color

gnanapaul wrote:
?(do not using seperate class)

Handle the WM_DRAWITEM [^]message in the dialog and do the painting if the control id matches.

nave

[OpenedFileFinder] [My Blog]

Re: CButton color change

Paulraj G17-Dec-08 23:03

Paulraj G

17-Dec-08 23:03

can you please explain briefly?

G.Paulraj

Re: CButton color change

CPallini17-Dec-08 23:18

CPallini

17-Dec-08 23:18

gnanapaul wrote:
can you please explain briefly?

Yes, see [^].
Roll eyes | :rolleyes:

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

[My articles]

Re: CButton color change

Naveen17-Dec-08 23:43

Naveen

17-Dec-08 23:43

gnanapaul wrote:
can you please explain briefly?

I means as follows

void CMyDialog::OnDrawItem(int nIDCtl, LPDRAWITEMSTRUCT lpDrawItemStruct) 
{
        // m_Button is the control variable of button for which you want to change color
	if( nIDCtl == m_Button.GetDlgCtrlID())        {

            // Do the painting for the button. You will ket necessary information 
            // and DC from lpDrawItemStruct
          
             return;
        }
	CMyDialog::OnDrawItem(nIDCtl, lpDrawItemStruct);
}

nave

[OpenedFileFinder] [My Blog]

Re: CButton color change

Code-o-mat17-Dec-08 23:24

Code-o-mat

17-Dec-08 23:24

Or handle the WM_CTLCOLORBTN message in the parent.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <

Re: CButton color change

Naveen17-Dec-08 23:32

Naveen

17-Dec-08 23:32

Code-o-mat wrote:
Or handle the WM_CTLCOLORBTN message in the parent.

I dont think this message help in changing the color of button. Did you try?

nave

[OpenedFileFinder] [My Blog]

Re: CButton color change

Code-o-mat17-Dec-08 23:51

Code-o-mat

17-Dec-08 23:51

Yes, you are right, sorry, i forgot it doesn't work for buttons, which is imho a bit lame... and even if it worked, if it comes to XP style skinned, rounded, fancy buttons you can forget about it.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <

Re: CButton color change

Iain Clarke, Warrior Programmer17-Dec-08 23:17

Iain Clarke, Warrior Programmer

17-Dec-08 23:17

Have a look at WM_CTLCOLOR / CWnd::OnCltColor.

This lets a a dialog control change the brush of a child button (etc).

It gives the the DC that the control will draw into - so you can (I'm fairly sure) also use pDC->SetTextColor at the same time.

Iain.

Re: CButton color change

Naveen17-Dec-08 23:55

Naveen

17-Dec-08 23:55

Iain Clarke wrote:
It gives the the DC that the control will draw into

I dont think so[^]

nave

[OpenedFileFinder] [My Blog]

Re: CButton color change

Hamid_RT17-Dec-08 23:34

Hamid_RT

17-Dec-08 23:34

You can use of WM_CTLCOLORBTN.See here[^]

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 )

Re: CButton color change

Jijo.Raj18-Dec-08 0:21

Jijo.Raj

18-Dec-08 0:21

Check out this article too - How to create a colored button?[^].

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

ATLASSERT question

monsieur_jj17-Dec-08 21:46

monsieur_jj

17-Dec-08 21:46

Hi all,

Does ATLASSERT run during release mode? should I enclose it with ifdef debug? Or it doesnt do anything on release mode?

Thanks,
Jayjay

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