Create the console when the first parameter on the command line is '-console'. printf output will then be shown.

1 files changed, 55 insertions, 0 deletions

diff --git a/libwinmain/winmain.c b/libwinmain/winmain.c
index 899a56ba9..7a69dac4a 100644
--- a/libwinmain/winmain.c
+++ b/libwinmain/winmain.c
@@ -1,5 +1,54 @@
 #include <windows.h>
 
+#include <stdio.h>
+#include <fcntl.h>
+#include <io.h>
+
+static void CreateConsole()
+{
+  static int ConsoleCreated=0;
+  va_list arglist;
+  if (!ConsoleCreated)
+  {
+    int hConHandle;
+    long lStdHandle;
+    CONSOLE_SCREEN_BUFFER_INFO coninfo;
+
+    FILE *fp;
+    const unsigned int MAX_CONSOLE_LINES = 500;
+    ConsoleCreated=1;
+    if (!AttachConsole(ATTACH_PARENT_PROCESS))
+      AllocConsole();
+
+      // set the screen buffer to be big enough to let us scroll text
+    GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE),	&coninfo);
+    coninfo.dwSize.Y = MAX_CONSOLE_LINES;
+    SetConsoleScreenBufferSize(GetStdHandle(STD_OUTPUT_HANDLE),	coninfo.dwSize);
+
+    // redirect unbuffered STDOUT to the console
+    lStdHandle = (long)GetStdHandle(STD_OUTPUT_HANDLE);
+    hConHandle = _open_osfhandle(lStdHandle, _O_TEXT);
+    fp = _fdopen( hConHandle, "w" );
+    *stdout = *fp;
+    setvbuf( stdout, NULL, _IONBF, 0 );
+
+    // redirect unbuffered STDIN to the console
+    lStdHandle = (long)GetStdHandle(STD_INPUT_HANDLE);
+    hConHandle = _open_osfhandle(lStdHandle, _O_TEXT);
+    fp = _fdopen( hConHandle, "r" );
+    *stdin = *fp;
+    setvbuf( stdin, NULL, _IONBF, 0 );
+
+    // redirect unbuffered STDERR to the console
+    lStdHandle = (long)GetStdHandle(STD_ERROR_HANDLE);
+    hConHandle = _open_osfhandle(lStdHandle, _O_TEXT);
+    fp = _fdopen( hConHandle, "w" );
+    *stderr = *fp;
+    setvbuf( stderr, NULL, _IONBF, 0 );
+
+  }
+}
+
 int __stdcall WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
 {
   int argc=1;
@@ -8,6 +57,12 @@ int __stdcall WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdL
   char *argv[MAXNRARGS];
   char *pTmp;
   char *pProgramName;
+
+  if (!strncmp(lpCmdLine,"-console",8))
+  {
+    CreateConsole();
+    lpCmdLine+=9;
+  }
   
   GetModuleFileName(NULL,ProgramName,255);
   pTmp=strrchr(ProgramName,'\\');