declare function in regular dll for delphi - C / C++ / MFC Discussion Boards

Ulrich Straub11-Nov-01 5:04

11-Nov-01 5:04

Hi,

I like to open a CFileDialog in detail view with files sorted according to their age (latest on top, oldest at the end).
How could I do that ?
Any help is appreciated.

BTW: I already use the CFileDialog but I want to the files appear sorted according to their age.

Regards
Ulrich Straub

Customizing webbrowser control

11-Nov-01 4:41

Hi,

I'm a novice MFC programmer and am trying to give myself a crash course by programming a simple web application. Basically, I'm trying to create a program to extract information from web pages. I've accomplished this by using the MS web browser control and MSHTML.

I'm really downloading web pages in the background so there's no need for me to download the included images. I know it's possible to turn off image downloading in the WB control, but the only explanations I've found on the MSDN site are very unclear. They discuss modifying IDispatch::Invoke to handle DISPID_AMBIENT_DLCONTROL.

Can anyone out there help explain how to do this a little more clearly? My current project has a CWebbrowser class being used by a Dialog box and I don't see where I'm supposed to make these IDispatch modifications.

Protected Storage System Provider

Peter Molnar11-Nov-01 4:00

Peter Molnar

11-Nov-01 4:00

Sirs,

do you have information, eventually links of how this key works? OMG | :OMG:

HKEY_CURRENT_USER\Software\Microsoft\Protected Storage System Provider\

Thanks in advance.

Bunburry

It is only by not paying one's bills that one can hope to live in the memory of the commercial classes. (O.Wilde)

a simple mfc question

Dave Kerr11-Nov-01 3:56

Dave Kerr

11-Nov-01 3:56

I have a class called CToolBarTab which is derived from CTabCtrl. The idea is that you 'attach' it to a dialogbar, and it stretches to fit it. how can i do this? i tried calling GetClientRect on the dialogbar passed in my Create function, but it didn't work...
thanks in advance! Smile | :)

Dave Kerr
focus_business@hotmail.com
www.geocities.com/twocrazynerds/home.htm

Got Focus?

11-Nov-01 0:00

I was wondering the correct way to tell if a dialog has focus or not. Anyone have a sample if statement handy?

Re: Got Focus?

Nish Nishant11-Nov-01 16:21

Nish Nishant

11-Nov-01 16:21

use CWnd::GetFocus

It returns the CWnd* of the window that has focus

If you are not using MFC try using a combination of GetForegroundWindow and GetFocus [both are API calls]

Nish

Sonork ID 100.9786 voidmain

www.busterboy.org

Nish is a BIG fan of Goran Ivanisevic

Re: Got Focus?

Tomasz Sowinski12-Nov-01 1:28

Tomasz Sowinski

12-Nov-01 1:28

Dialogs usually do not have the focus. Focus belongs to the controls on the dialog - edits, buttons, etc.

Why do you need to know this?

Tomasz Sowinski -- http://www.shooltz.com

declare function in regular dll for delphi

10-Nov-01 22:58

I writed regular dll in vc++ for delphi.
It works in vc client program but in delphi it performs illegal ... and shut down when it trys to send parameter to the function.

the function declared in the dll so :
extern "C" __declspec(dllexport) int Reg1(int pc)
====================================================

Please help !!!!

Re: declare function in regular dll for delphi

Michael Dunn10-Nov-01 23:22

Michael Dunn

10-Nov-01 23:22

You probably need to add __stdcall to the prototype. Right now I'm using a Delphi DLL from C and the exported functions use the __stdcall convention, so it's probably the same going the other way (C used in Delphi).

--Mike--
http://home.inreach.com/mdunn/
#include "witty_sig.h"
Heart | [heart]

your

with

and

Re: declare function in regular dll for delphi

11-Nov-01 0:19

Thank you !

Where exactly need I to add _stdcall ?

Manny thanks

Ok ! I did so and it dont success

11-Nov-01 2:37

I declared the function in my dll so :

extern "C" __declspec(dllexport) BOOL _stdcall func(int num);

and now the Delphi client program can not connect to it at all !

What can I to do ??? Please help !!!

Re: Ok ! I did so and it dont success

Tomasz Sowinski12-Nov-01 1:37

Tomasz Sowinski

12-Nov-01 1:37

Exported __stdcall functions have their names mangled. That's probably why Delphi program 'can't connect'.

I have zero experience with Delphi - are you using LoadLibrary/GetProcAddress before calling function from DLL? Or Delphi does this for you?

Tomasz Sowinski -- http://www.shooltz.com

not processing button clicks

10-Nov-01 22:44

hi,

i have a loop and in it it connects to a http site with CInternetConnection, but the dialog does not update util it has finished doing everything, i overcame this by addeing some CDialog::RedrawWindow(); in, but still its doesn't process any clicks on buttons or anything, it just redraws the window with my updated status, so is there a way to fix this? delphi has a processMessages() proceduce, is there something simular in MFC VC++ ?

thanks for any hepl you can provide.

p.s great site Smile | :)

muz.

Re: not processing button clicks

Nish Nishant10-Nov-01 22:47

Nish Nishant

10-Nov-01 22:47

use a worker thread
Read Joe Newcomer's article on worker threads
that should get you started

Nish

Sonork ID 100.9786 voidmain

www.busterboy.org

Nish is a BIG fan of Goran Ivanisevic

Re: not processing button clicks

Anders Molin11-Nov-01 2:40

Anders Molin

11-Nov-01 2:40

Take a look at PeekMessage();

- Anders

Money talks, but all mine ever says is "Goodbye!"

Flat Window

alton10-Nov-01 14:50

alton

10-Nov-01 14:50

How can I make a flat window, I mean there is no separate line between the menu and tool bar,

Thank you Confused | :confused:

Inclusion Confusion

Stephen Caldwell10-Nov-01 11:00

Stephen Caldwell

10-Nov-01 11:00

I have three classes the are dependant on each other
ex:

#include "First.h"
class First {
Second* psecond;
public:
  First();
  ~First();

  void AttachSecond(Second* second);
};


#include "Third.h"
class Second {
Third* pthird;
public:
  Second();
  ~Second();
  
  void AttachThird(Third* third);
};


#include "First.h"
class Third {
First* pfirst;
public:
  Third();
  ~Third();
  
  void AttachFirst(First* First);
};

When I do the includes for each class, VC gives me
undeclared identifier errors on any reference to the included class.
Any Ideas or is it too cryptic?

Stephen Caldwell
Blackfission, CEO
http://bf.steffc.yi.org:81

Re: Inclusion Confusion

Rick York10-Nov-01 11:18

Rick York

10-Nov-01 11:18

What I would do is use forward declarations. In each class' header I would do the old :

class CSecond;

or

class CThird;

or whatever class is referenced in that header. I would not include the other class header there. I would put the includes of the other headers in the source code module of the class that needs it.

Re: Inclusion Confusion

Stephen Caldwell10-Nov-01 11:30

Stephen Caldwell

10-Nov-01 11:30

It worked. Thank you.

Stephen Caldwell
Blackfission, CEO
http://bf.steffc.yi.org:81

Re: Inclusion Confusion

Tim Deveaux10-Nov-01 11:25

Tim Deveaux

10-Nov-01 11:25

Hmmm - that first include should be #include "second.h", but maybe thats a typo.

Have you tried using forward declarations instead? If you are only using pointers to the classes, this should work:

class Second;  // fwd decl
 
class First {
   Second* psecond;
 
public:  
   First();
  ~First();  
   void AttachSecond(Second* second);
};

Re: Inclusion Confusion

Andres Manggini12-Nov-01 7:40

Andres Manggini

12-Nov-01 7:40

I don't quite understand the example, but I'll assume you have three different .h files, each .h with one class.

based on what I said, It seems that your first class should include the second class header, like this:

/*instead of: #include "First.h" */
#include "Second.h"

class First {
...
...
...

Andres Manggini.
Buenos Aires - Argentina.

Checkbox in ListCtrl

10-Nov-01 5:06

Dear smart programmers:
Could someone help me. I have ListCtrl of 8 colums and I need put checkboxes in Col4, Col5 and Col8. Thank you in advance,

Mats

Re: Checkbox in ListCtrl

Tomasz Sowinski12-Nov-01 1:18

Tomasz Sowinski

12-Nov-01 1:18

Use LVS_EX_SUBITEMIMAGES extended style, create an image list containing checked and unchecked boxes. If you want users to switch between checked/unchecked states with the mouse, you'll have to handle WM_LBUTTONDOWN as well. CListCtrl::HitTest will check if click was inside subitem image.

Tomasz Sowinski -- http://www.shooltz.com

two quastions:

10-Nov-01 2:03

1. how can create items in CListCtrl with different font color for each item?
2. how can i add a Progress Bar to a status bar?

thanks a lot

Re: two quastions:

Tim Deveaux10-Nov-01 3:50

Tim Deveaux

10-Nov-01 3:50

For 1., I think you'll want to look at subclassing your own CListCtrl, setting the 'Owner draw fixed' style in the resorce editor. Then you can override the CListCtrl::DrawItem method and use ::SetTextColor and ::SetBkColor to change the colors on a per item basis. (Er, assuming you are using DrawText(lpDrawItemStruct->hDC, ...))

There should be lots of articles here on the site with more info on this type of stuff.

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