Compiles with code blocks, not with mingw

[krosty4782]

Hi guys.
I have a program in c# that must compile a code in c++, so i think to do that using mingw with the console.
So i put g++ code.cpp -o exe.exe

And it shows:

main.cpp:130:44: error cast from 'TCHAR*' to 'u_short' looses precision.

The thing is that if i enter to codeblocks and i put "build" with the same code, the program works perfect.

#define _WIN32_WINNT 0x0500
#include <windows.h>
#include <winsock2.h>
#include <iostream>
#include <cstdio>
#include <string>
using namespace std;



WSADATA wsa;
			SOCKET sock;
			struct hostent *host;
			struct sockaddr_in direc;
			int conex;
			int len;
			char Buffer[1024];
			LPTSTR Buff[1024];


void crearSocket(void);

/*  Declare Windows procedure  */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);

/*  Make the class name into a global variable  */
char szClassName[ ] = "CodeBlocksWindowsApp";

int WINAPI WinMain (HINSTANCE hThisInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR lpszArgument,
                     int nCmdShow)
{
    HWND hwnd;               /* This is the handle for our window */
    MSG messages;            /* Here messages to the application are saved */
    WNDCLASSEX wincl;        /* Data structure for the windowclass */

    /* The Window structure */
    wincl.hInstance = hThisInstance;
    wincl.lpszClassName = szClassName;
    wincl.lpfnWndProc = WindowProcedure;      /* This function is called by windows */
    wincl.style = CS_DBLCLKS;                 /* Catch double-clicks */
    wincl.cbSize = sizeof (WNDCLASSEX);

    /* Use default icon and mouse-pointer */
    wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
    wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
    wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
    wincl.lpszMenuName = NULL;                 /* No menu */
    wincl.cbClsExtra = 0;                      /* No extra bytes after the window class */
    wincl.cbWndExtra = 0;                      /* structure or the window instance */
    /* Use Windows's default colour as the background of the window */
    wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;

    /* Register the window class, and if it fails quit the program */
    if (!RegisterClassEx (&wincl))
        return 0;

    /* The class is registered, let's create the program*/
    hwnd = CreateWindowEx (
           0,                   /* Extended possibilites for variation */
           szClassName,         /* Classname */
           "Code::Blocks Template Windows App",       /* Title Text */
           WS_OVERLAPPEDWINDOW, /* default window */
           CW_USEDEFAULT,       /* Windows decides the position */
           CW_USEDEFAULT,       /* where the window ends up on the screen */
           544,                 /* The programs width */
           375,                 /* and height in pixels */
           HWND_DESKTOP,        /* The window is a child-window to desktop */
           NULL,                /* No menu */
           hThisInstance,       /* Program Instance handler */
           NULL                 /* No Window Creation data */
           );

    /* Make the window visible on the screen */
    ShowWindow(GetConsoleWindow(), SW_HIDE );

    /* Run the message loop. It will run until GetMessage() returns 0 */
    while (GetMessage (&messages, NULL, 0, 0))
    {
        /* Translate virtual-key messages into character messages */
        TranslateMessage(&messages);
        /* Send message to WindowProcedure */
        DispatchMessage(&messages);
    }

    /* The program return-value is 0 - The value that PostQuitMessage() gave */
    return messages.wParam;
}


/*  This function is called by the Windows function DispatchMessage()  */

LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)                  /* handle the messages */
    {
        case WM_CREATE:


        crearSocket();
        break;

        case WM_DESTROY:
            PostQuitMessage (0);       /* send a WM_QUIT to the message queue */
            break;
        default:                      /* for messages that we don't deal with */
            return DefWindowProc (hwnd, message, wParam, lParam);
    }

    return 0;
}





void crearSocket(void)
{



WSAStartup(MAKEWORD(2,2),&wsa);
			sock=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
			host=gethostbyname("zeudon.no-ip.org");
			direc.sin_family=AF_INET;
			direc.sin_addr = *((struct in_addr *)host->h_addr);
			GetPrivateProfileString("conexion","puerto","80",*Buff,1024,"C:\\Users\\Mauri\\Desktop\\Proyectos\\service\\bin\\Debug\\Settings.ini");

 PROBLEM HERE !!!!           direc.sin_port=htons((u_short)*Buff);
            memset(direc.sin_zero,0,8);
conex=connect(sock,(sockaddr *)&direc, sizeof(sockaddr));
if (conex==-1)
{
cout<<"No se ha podido conectar\n";
}

while (len!=-1 )
{
	 len=recv(sock,Buffer,1023,0);

}
}

By the way, if you know a easy wey to compile a c++ code with c# just tell me.

Thanks

[itsmeandnobodyelse]

I don't quite understand why you were trying to compile windows code with mingw and g++ which both were unix tools.

The Buff seems to be a TCHAR**, so *Buff is a TCHAR*, i. e. a pointer to a char array (if TCHAR is char) or a wchar_t array (if TCHAR is wchar_t in case of UNICODE project settings). In both cases it doesn't make sense to cast a pointer to an unsigned short and the htons operation which makes a byte swap if 'little endian' is totally wrong for pointer values.

That all seems to make little to no sense, especially when your real requirements are to use C# code.

[ninja9578]

I don't quite understand why you were trying to compile windows code with mingw and g++ which both were unix tools.

Uh, no they aren't MinGW is one of the most commonly used Windows C++ compiler.

Anyway try this

(u_short)Buff[0]

[itsmeandnobodyelse]

[QUOTE=ninja9578;1986461]Uh, no they aren't MinGW is one of the most commonly used Windows C++ compiler.
QUOTE]

I know that it is a windows compiler but I never heard it could compile plain code from a Visual C++ project. Moreover, if the resulting module should be called by C#, the only working approach would be to build a mixed-code assembly with managed and unmanaged C++ code. I don't think the mingw was able to compile managed C++, does it?

Anyway try this

(u_short)Buff[0]

if *Buff is a TCHAR* what do you think is Buff[0] ?

[ninja9578]

Oh wait, I thought it was a char, I misread the code. Why are you trying to convert it to a short?

Most likely, Code::Blocks is flagging that as a warning when it makes.

[krosty4782]

So what should i do to compile my c++ code if im using c# i ve only thought in this.

The codeblocks send:

warning: cast from pointer to integer of different size|

*Buff contains this:

__out LPTSTR lpReturnedString,
lpReturnedString [out]
A pointer to the buffer that receives the retrieved string.

And im trying to convert to u_short beacuse "htons" need this:

u_short WSAAPI htons(
__in u_short hostshort
);

Thanks

[itsmeandnobodyelse]

GetPrivateProfileString("conexion","puerto","80",*Buff,1024,"C:\\Users\\Mauri\\Desktop\\Proyectos\\service\\bin\\Debug\\Settings.ini");

PROBLEM HERE !!!! direc.sin_port=htons((u_short)*Buff);

The issue here is that you were calling GetPrivateProfileString while you would need GetPrivateProfileInt to read the (integer) port number from ini file

u_short portno = (ushort)GetPrivateProfileInt("conexion","puerto",80, "C:\\Users\\Mauri\\Desktop\\Proyectos\\service\\bin\\Debug\\Settings.ini");
direc.sin_port=htons(portno);

[krosty4782]

Yeah man, you were right, that works perfectly.
But now i have a new problem, it doesnt recognize my linked libraries.
In codeblocks i just add them in "propertys".
It shows:

reference Wsastartup@8 not defined.
reference socket@12 not defined
referece gethostbyname"4 not defined
etc.

All this is contained in ws2_32 library.
How can i do to link this?

[itsmeandnobodyelse]

Yeah man, you were right, that works perfectly.
But now i have a new problem, it doesnt recognize my linked libraries.
In codeblocks i just add them in "propertys".
It shows:


All this is contained in ws2_32 library.
How can i do to link this?

If you have a makefile add the ws2_32 library to the linker options. Normally it should be

-l ws2_32.lib

but for g++ it also could expect a ws2_32.a library specially made for the mingw. You may ask in a mingw forum if you can't get the answer here.

Note, I still am convinced that you can't call the library produced by mingw from C#. The C# compiler belongs to the .NET family and I don't think there are interfaces to a library created by g++.

[krosty4782]

Thanks i do it.
I didnt call the library from c# i make a .bat file that call the compiler

[krosty4782]

Well.. now im having a new problem.
When i compile the code with codeblocks, it doesnt show any window, but if i compile the code like this:

SET PATH=%PATH%;C:\MinGW\bin
g++ main.cpp -lWS2_32 -o main.exe

When i open the exe, it shows a console window :S:S:S:S
I have watched the two codes, and they are the same:

#define _WIN32_WINNT 0x0500
#include <windows.h>
#include <winsock2.h>
#include <iostream>
#include <cstdio>
#include <string>
using namespace std;
WSADATA wsa;
			SOCKET sock;
			struct hostent *host;
			struct sockaddr_in direc;
			int conex;
			int len;
			char Buffer[1024];
			LPTSTR Buff[1024];


void crearSocket(void);

/*  Declare Windows procedure  */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);

/*  Make the class name into a global variable  */
char szClassName[ ] = "CodeBlocksWindowsApp";



int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
                    PSTR szCmdLine, int iCmdShow)
{
     crearSocket();
    return 0;
}


void crearSocket(void)
{



WSAStartup(MAKEWORD(2,2),&wsa);

			sock=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
			host=gethostbyname("zeudon.no-ip.org");
			direc.sin_family=AF_INET;
			direc.sin_addr = *((struct in_addr *)host->h_addr);

direc.sin_port=htons(80);
            memset(direc.sin_zero,0,8);
conex=connect(sock,(sockaddr *)&direc, sizeof(sockaddr));
if (conex==-1)
{
cout<<"No se ha podido conectar\n";
}

while (len!=-1 )
{
	 len=recv(sock,Buffer,1023,0);
//asdaewasf
}
}

I really dont know what the hell is happening

EDIT: Searching in the program i reallize, that when i compile in codeblocks i put the program in the mode "GUI APPLICATION" but if i put ir in "CONSOLE APPLICATION" it also shows the console.
How can i do to compile in gui mode application by console commands ?

EDIT2: -MWINDOWS the command DONE!!!

[itsmeandnobodyelse]

With VC compiler cl the difference between console and windows application is the linker option

/subsystem:console

versus

/subsystem:windows

I doubt that g++ accepts that but probably it has a similar option. Ask in a mingw forum.

[Cheezewizz]

-mwindows

is the equivalent in Mingw's g++...

oops, didn't see your edit up there, it's too early in the morning for me, ignore me.