Can a Win32 console application detect if it has been run from the explorer or not?

See http://support.microsoft.com/kb/99115, “INFO: Preventing the Console Window from Disappearing”.

The idea is to use GetConsoleScreenBufferInfo to determine that the cursor has not moved from the initial 0,0 position.

Code sample from @tomlogic, based on the referenced Knowledge Base article:

// call in main() before printing to stdout
// returns TRUE if program is in its own console (cursor at 0,0) or
// FALSE if it was launched from an existing console.
// See http://support.microsoft.com/kb/99115
#include <stdio.h>
#include <windows.h>
int separate_console( void)
{
    CONSOLE_SCREEN_BUFFER_INFO csbi;

    if (!GetConsoleScreenBufferInfo( GetStdHandle( STD_OUTPUT_HANDLE), &csbi))
    {
        printf( "GetConsoleScreenBufferInfo failed: %lu\n", GetLastError());
        return FALSE;
    }

    // if cursor position is (0,0) then we were launched in a separate console
    return ((!csbi.dwCursorPosition.X) && (!csbi.dwCursorPosition.Y));
}