C / C++ / MFC

16-Jul-09 9:14

i have created a vc++ win32 project in visual studio 2008. can i have two cpp files in the source with int main()..??? if no then what do i have to do...how can i make them both execute simultaneously..?? please help i am totally new to this...

Rajesh R Subramanian16-Jul-09 9:23

Rajesh R Subramanian

16-Jul-09 9:23

Yes, you can have many source files in a project.

Member 3112447 wrote:
how can i make them both execute simultaneously..??

What do you mean by that?

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

Member 311244716-Jul-09 9:40

16-Jul-09 9:40

i mean each time i try and execute i only get the output of the first cpp code which contains int main..why cant i get the output of the second..

Member 311244716-Jul-09 9:43

Re: WIN 32 Project [modified]

16-Jul-09 9:43

like i want to get output for this code:

#include <LEDA/graph/graph.h>

using namespace leda;

int main()
{
graph G; //define directed graph G

node center=G.new_node(); //create new node "center" of G

int i;
for (i=0;i<100;i++) {
node v=G.new_node(); //create new node v of G
G.new_edge(center,v); //create new edge of G
//with source center and target v
}

edge e;
forall_edges(e,G) { //iterate over all edges e of G
node source=G.source(e); //compute source of e
node target=G.target(e); //compute target of e

std::cout << "edge ";
G.print_edge(e); //print edge
std::cout << " has source ";
G.print_node(source); //print source
std::cout << " and target ";
G.print_node(target); //print target
std::cout << std::endl;
}

return 0;
}

and the following was the .cpp file i added to the source code folder at the time of installation

#include <LEDA/graphics/graphwin.h>
#include <LEDA/system/file.h>
#include <LEDA/graphics/bitmaps/button32.h>

#if defined(LEDA_NAMESPACE)
using namespace leda;
#endif

#if defined(WINMAIN)

int main() {
int argc;
char** argv;
get_command_line(argc,argv);

#else

int main(int argc, char** argv) {
GraphWin gw1;

int menu1 = gw1.add_menu("Routing Game Type");
gw1.add_menu("atomic",menu1);
gw1.add_menu("non-atomic",menu1);

//gw1.add_separator(menu1);

gw1.display(); gw1.edit();

return 0;

#endif

string frame_label("Leda Graph Editor (GraphWin %.1f)",
GraphWin::version());

GraphWin gw(frame_label);

window& W = gw.get_window();

gw.display(400,window::center);

W.set_icon_label("GraphWin");

W.set_cursor(XC_watch);

string home_dir = get_home_directory();

home_dir = home_dir.replace_all("\\","/");

string rc_file = home_dir + "/.graphwinrc";

if (is_file(rc_file))
{ gw.message("Loading Options from\\blue " + rc_file);
leda_wait(1.2);
gw.read_defaults();
}
else
{ gw.message("No\\blue " + rc_file + "\\black ~(using built-in defaults).");

leda_wait(1.8);
}

gw.message("");

if (argc > 1)
{ string fname = argv[1];
string gname;
if (fname.tail(4) == ".gml")
{ gname = fname.del(".gml");
int err = gw.read_gml(fname);
if (err) gw.acknowledge("Error Reading GML-File", fname);
}
else
if (fname.tail(7) == ".dimacs")
{ gname = fname.del(".dimacs");
int err = gw.read_dimacs(fname);
if (err) gw.acknowledge("Error Reading Dimacs File", fname);
}
else
{ gname = fname.del(".gw");
int err = gw.read_gw(fname);
if (err && err < 5) gw.acknowledge("Error Reading GW-File", fname);
}
gw.set_graphname(gname);
}

int but = 0;

//bool save_defaults = false;

int def_choice = 0;

W.set_cursor();

while (but == 0)
{
gw.edit();

panel P;
P.text_item("");
P.text_item("\\bf\\blue Exit GraphWin");
P.choice_item("Options in ~/.graphwinrc",def_choice,"keep","write","reset");

if (gw.unsaved_changes())
{ P.text_item("\\bf Graph not written since last change !\\n");
P.button("save gw",3);
P.button("save gml",4);
}

P.button("cancel", 0);
P.button("exit",1);
P.buttons_per_line(4);

but = gw.open_panel(P);

if (but == 3) gw_save_handler(gw);
if (but == 4) gw_save_gml_handler(gw);

if (but != 1 && gw.unsaved_changes()) but = 0;
}

if (def_choice != 0)
{ if (def_choice == 2) gw.reset_defaults();
gw.save_defaults();

}

return 0;

}

Stuart Dootson16-Jul-09 9:50

16-Jul-09 9:50

Rename the second one so it's called something other than main and call it from the first main. You'll also need to tell the first main about the renamed function:

first_main.cpp

// Whatever #includes you have

extern int second_main(int argc, char** argv);

int main(int argc, char** argv)
{
   // Whatever the first main does


   return second_main(argc, argv);
}

second_main.cpp

// Whatever #includes you have

int second_main(int argc, char** argv)
{
   // Whatever the second main does


   return someValue;
}

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

modified on Thursday, July 16, 2009 7:07 PM

Stuart Dootson16-Jul-09 9:46

Converting very old VC++ to VS2005 and MSXML

16-Jul-09 9:46

Member 3112447 wrote:
can i have two cpp files in the source with int main()

Not if it's a console app - the C runtime library wants to link to the main from your app. If your app has two mains, then there will be an ambiguity; the runtime won't know which main to link with.

Similarly, a GUI Windows app is looking for WinMain (or wWinMain if you're using Unicode). You can't have two WinMains in a GUI app.

Member 3112447 wrote:
how can i make them both execute simultaneously

In the same process? Make them functions that execute in separate threads[^].

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

gartnerj16-Jul-09 6:55

16-Jul-09 6:55

Folks,
I have a project I'm trying to convert from VC++ MFC to VS2005, and I'm having a problem with msxml (and I know NOTHING about MFC -- have never coded in it).

Basically, there is an msxml.cpp/.h in the project directory, and when I compile, I am getting type redefintion errors.

MSXML.cpp
e:\....\graphing\mpactgrafx activex control\msxml.h(972) : 
 error C2011: 'XMLDOMDocumentEvents' : 'struct' type redefinition
 c:\program files\microsoft visual studio 8\vc\platformsdk\include\msxml.h(9495) : see declaration of 'XMLDOMDocumentEvents'

in the PROJECT msxml.h:

class XMLDOMDocumentEvents : public COleDispatchDriver

and in the platformsdk\Include\msxml.h:

XMLDOMDocumentEvents : public IDispatch

Looks like it is pulling in not only the local msxml (which is what I want it to use), but also the
c:\program files\Microsoft Visual Studio 8\VC\PlatformSDK\include\msXml.h

so I am getting the redef in the project msxml stuff.

I don't see any real way to EXCLUDE only that platformSDK\Include\msxml.h file during compilation.
I've tried the tools->options->project..-> VC++ directories, but if I exclude that platformSDK\include, I get all sorts of badness happening.

If I get rid of the local msxml.h/cpp, I also get bad things happening (due to used objects from that old msxml missing)

Any help greatly appreciated.

Stuart Dootson16-Jul-09 9:39

16-Jul-09 9:39

Add your local directory to the C++->General->Additional Include Directories property (Debug AND Release). That should mean the compiler sees your local msxml.h before (and instead of) the Platform SDK one.

Or, change the msxml #includes to

#include "./msxml.h"

I think that might work as well?

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

gartnerj16-Jul-09 9:49

16-Jul-09 9:49

Thanks -- actually DID include the local dir to resolve a few other issues -- this one is the only one I have left outstanding at the moment (at least until THIS one clears and the compilation finds something else WTF | :WTF:

)

I have tried the "./msxml.h" also, but I am still getting that error message (I even put in the entire path, same result).

Stuart Dootson16-Jul-09 9:52

16-Jul-09 9:52

gartnerj wrote:
I have tried the "./msxml.h" also, but I am still getting that error message (I even put in the entire path, same result).

Well, that's spooky.

Have you changed ALL #includes of msxml.h? Try checking stdafx.h and rebuilding from scratch.

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

gartnerj16-Jul-09 10:10

16-Jul-09 10:10

Yeah, really strange.

There are only two references to #include "msxml.h" in the project:
1)a generated MSXML.cpp file
2)a DataParse.h (which is where a bunch of custom parsing code is defined).

No other #include of msxml.h at all!! Confused | :confused:

Randor 16-Jul-09 10:24

Randor

16-Jul-09 10:24

Add or make sure the following is in your stdafx.h

#ifndef VC_EXTRALEAN
#define VC_EXTRALEAN
#endif

How to use VC_EXTRALEAN and WIN32_LEAN_AND_MEAN to enhance the build process in Visual C++[^]

Let me know if this works.

Best Wishes,
-David Delaune

gartnerj16-Jul-09 10:39

16-Jul-09 10:39

Thanks David,
I had seen the WIN_LEAN_AND_MEAN setting and had tried that with no luck.

I tried the VC_EXTRALEAN, and I still get the errors:

DataParse.cpp
e:\....\graphing\mpactgrafx activex control\msxml.h(977) : 
error C2011: 'XMLDOMDocumentEvents' : 
     'struct' type redefinition
        c:\program files\microsoft visual studio 8\vc\platformsdk\include\msxml.h(9495) : 
see declaration of 'XMLDOMDocumentEvents'
MSXML.cpp
e:\....\graphing\mpactgrafx activex control\msxml.h(977) : 
error C2011: 'XMLDOMDocumentEvents' : 
     'struct' type redefinition
        c:\program files\microsoft visual studio 8\vc\platformsdk\include\msxml.h(9495) : see declaration of 'XMLDOMDocumentEvents'

No joy yet.

gartnerj16-Jul-09 10:46

16-Jul-09 10:46

Actually, looking in the code, the stdafx.h file HAS the define for VC_extralean - must have done that during the conversion up to VS2005!

Randor 16-Jul-09 10:50

Randor

16-Jul-09 10:50

Ok, lets be patient and work through this. First thing you need to do is find out where msxml.h is being included. Do you have #include <urlmon.h> included anywhere?

Best Wishes,
-David Delaune

Stuart Dootson16-Jul-09 13:22

16-Jul-09 13:22

Windows.h #includes Ole2.h which #includes ObjBase.h which #includes urlmon.h

No way round getting the SDKs msxml.h, as far as I can tell.

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

gartnerj17-Jul-09 3:49

17-Jul-09 3:49

Just checked, and NO, no ulrmon.h in any of the project files.

Stuart Dootson16-Jul-09 13:24

16-Jul-09 13:24

A suggestion. Stuff your local msxml.h inside a namespace when #including it:

namespace Old
{
   #include "msxml.h"
}

and then explicitly specify the namespace when using the structures out of your local file - e.g.

Old::XMLDOMDocumentEvents events;

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

gartnerj17-Jul-09 3:50

17-Jul-09 3:50

I'll have to give that a try -- will try to get to it later this morning -- working on a different project at the moment!

gartnerj17-Jul-09 10:53

call functions of a win32 dll from a ASP.Net

17-Jul-09 10:53

Stuart -- thanks. Using the namespace seems to have worked (at least, it got rid of the compilation errors and let me build the project).

Thanks folks for all of the help!!! Big Grin | :-D

ashwath197916-Jul-09 6:40

ashwath1979

16-Jul-09 6:40

Hi All,

Please let me know whether we can call functions of a win32 dll from a ASP.Net Web Page.

Regards,
Ashwath Hegde

Re: call functions of a win32 dll from a ASP.Net

«_Superman_»16-Jul-09 16:44

«_Superman_»

16-Jul-09 16:44

CPallini already gave you the answer here - http://www.codeproject.com/Messages/3122600/Re-Calling-functions-in-a-win32-dll-from-a-vb-net-application.aspx[^]

«_Superman_»
I love work. It gives me something to do between weekends.

Creating outlook express style frame headers/banners

Sternocera16-Jul-09 5:56

Sternocera

16-Jul-09 5:56

Hello,

I am creating an application that is stylistically similar to outlook express. I'd like to be able to create header or banner images, with anti-aliased text that can be changed dynamically. They would be displayed in the MainFrame, and would describe the nature of the current view (in outlook express, these are Inbox, Outbox, Sent Items, etc).

At the moment I'm simply using CBitmaps that load bitmap resources.

I guess the way to do this would be to create a class that inherits from CStatic or CBitmap, and uses GDI to draw the anti-aliased text. I'm at a bit of a loss as to how to proceed though - should I use an existing Codeproject class, or roll my own? My requirements really are simple - I want anti-aliased white text across a plain background, as a drop in replacement for my existing CBitmaps, that looks like outlook express.

Regards,
Sternocera

VC++ library LEDA

Member 311244716-Jul-09 5:21