[c-host] windows: fix --help output in command prompt

This commit is contained in:
Geoffrey McRae 2019-12-13 23:22:11 +11:00
parent 26fa5c8860
commit e75f3a7278

View File

@ -24,6 +24,8 @@ Place, Suite 330, Boston, MA 02111-1307 USA
#include <windows.h>
#include <setupapi.h>
#include <shellapi.h>
#include <fcntl.h>
#include <io.h>
#include "interface/platform.h"
#include "common/debug.h"
@ -157,6 +159,21 @@ static BOOL WINAPI CtrlHandler(DWORD dwCtrlType)
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
/* this is a bit of a hack but without this --help will produce no output in a windows command prompt */
if (AttachConsole(ATTACH_PARENT_PROCESS))
{
HANDLE std_err = GetStdHandle(STD_ERROR_HANDLE);
HANDLE std_out = GetStdHandle(STD_OUTPUT_HANDLE);
int std_err_fd = _open_osfhandle((intptr_t)std_err, _O_TEXT);
int std_out_fd = _open_osfhandle((intptr_t)std_out, _O_TEXT);
if (std_err_fd > 0)
*stderr = *_fdopen(std_err_fd, "w");
if (std_out_fd > 0)
*stdout = *_fdopen(std_out_fd, "w");
}
int result = 0;
app.hInst = hInstance;