Re: [Mingw-users] -mwindows, with printf output to Console that I start the program??

[Earnie B. <ear...@ya...>]

Paul G. wrote:
> 
>>Hello
>>
>>If I build a Win32 app with flag -mwindows, I wonder if there is a way
>>to enable console output from printf, to the console(sh) that I start
>>the program(started from commandline in msys sh)?
> 
> 
> 	Yes.
> 

Ok, I was wrong.  However,

> 	It is a fairly straightforward operation using C/C++:
> 
> $ g++ -v
> Reading specs from d:/msys/1.0/mingw/bin/../lib/gcc-lib/mingw32/3.2.3/specs
> Configured with: ../gcc/configure --with-gcc --with-gnu-ld --with-gnu-as --host=mingw32 --target=mingw32 --
> prefix=/mingw --enable-threads --disable-nls --enable-languages=c++,f77,objc --disable-win32-registry --disable-
> shared --enable-sjlj-exceptions
> Thread model: win32
> gcc version 3.2.3 (mingw special 20030504-1)
> 
> Source follows:
> 
> #include <windows.h>
> #include <iostream>
> 
> int WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR lpCmd, int nShow)
> {
>     
>     MessageBox (NULL, "Hello, Windows!", "Hello", MB_OK);
>     printf("hello world\n");
s/printf("hello world\n");/std::cout << "Hello, world!" << std::endl;/
>     return 0;
> }
> 
> end of source
> 
> compile with:
> 
> 	g++ hello.cpp -ohello.exe -mwindows -mconsole
> 

Then ``g++ hello.cpp -o hello.exe'' works as well.

> 	Automatic output to both a window (message box) and to the Msys sh/console.
> 
> 	Allows you to immediately output to the console (under Msys shell) and can be extended to include a full-blown 
> Window as needed.  What is critical is that the -mconsole switch is included when the app is compiled (in addition to 
> the -mwindows switch).
> 

So, how critical are -mwindows and -mconsole?  Since gdi32 isn't used in 
your example, is it really a windows program?

Earnie.