Windows App with Console Running [SOLVED]

[golite]

Where do I apply the following POLINK option? This is copied from the help files. I need to understand it.

To be able to write information to the screen the process must have access to a console window. This is normally not the case for a GUI program, which is expected to create it's own windows. You can make sure the process have access to a console window by adding the following POLINK options:

-subsystem:console -entry:_WinMainCRTStartup. You should only use this in debug builds.

[TimoVJL]

Example in source code:

Code Select Expand

#define WIN32_LEAN_AND_MEAN
#include <windows.h>

#define _DEBUG

#ifdef _DEBUG
#include <stdio.h>
#pragma comment(linker, "-subsystem:console")
#pragma comment(linker, "-entry:WinMainCRTStartup")
#endif

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
#ifdef _DEBUG
printf("to console\n");
#endif
MessageBox(0, "Test1", "Test1", MB_OK);
return 0;
}

[golite]

Thank you very much. That worked just fine.

[Persay]

Great you found out and shared ! Can you also update the thread title prepending [solved]

[henrin]

In a recent program I have written:

int __stdcall WinMain(HINSTANCE hI, HINSTANCE hP, LPSTR CmdLine, int CmdShow)
{
   AllocConsole() ;
   ...
   _cprintf(fmt, ...) ;

and it worked.
I do not know why 

[frankie]

In a recent program I have written:

int __stdcall WinMain(HINSTANCE hI, HINSTANCE hP, LPSTR CmdLine, int CmdShow)
{
   AllocConsole() ;
   ...
   _cprintf(fmt, ...) ;

and it worked.
I do not know why 

Yes these are console output functions that directly write to the console window, so they always work.
The other method, using the standard stream functions (fprintf, etc) let you use all features of a consolle (redirection, etc).