Create a console window for help output on Windows
diff --git a/vncviewer/vncviewer.cxx b/vncviewer/vncviewer.cxx
index d980ed2..5f1b980 100644
--- a/vncviewer/vncviewer.cxx
+++ b/vncviewer/vncviewer.cxx
@@ -29,6 +29,7 @@
#include <errno.h>
#include <signal.h>
#include <locale.h>
+#include <fcntl.h>
#include <sys/stat.h>
#ifdef WIN32
@@ -261,6 +262,20 @@
static void usage(const char *programName)
{
+#ifdef WIN32
+ // If we don't have a console then we need to create one for output
+ if (GetConsoleWindow() == NULL) {
+ HANDLE handle;
+ int fd;
+
+ AllocConsole();
+
+ handle = GetStdHandle(STD_ERROR_HANDLE);
+ fd = _open_osfhandle((intptr_t)handle, O_TEXT);
+ *stderr = *fdopen(fd, "w");
+ }
+#endif
+
fprintf(stderr,
"\nusage: %s [parameters] [host:displayNum] [parameters]\n"
" %s [parameters] -listen [port] [parameters]\n",
@@ -273,6 +288,12 @@
"--<param>=<value>\n"
"Parameter names are case-insensitive. The parameters are:\n\n");
Configuration::listParams(79, 14);
+
+#ifdef WIN32
+ // Just wait for the user to kill the console window
+ Sleep(INFINITE);
+#endif
+
exit(1);
}