- win95/98 helper for new os.popen code

  this should be built as a console application (link with
  USER32.LIB), and installed in the same directory as the
  Python DLL.

PC/w9xpopen.c

+/*
+ * w9xpopen.c
+ *
+ * Serves as an intermediate stub Win32 console application to
+ * avoid a hanging pipe when redirecting 16-bit console based
+ * programs (including MS-DOS console based programs and batch
+ * files) on Window 95 and Windows 98.
+ *
+ * This program is to be launched with redirected standard
+ * handles. It will launch the command line specified 16-bit
+ * console based application in the same console, forwarding
+ * it's own redirected standard handles to the 16-bit child.
+
+ * AKA solution to the problem described in KB: Q150956.
+ */    
+
+#define WINDOWS_LEAN_AND_MEAN
+#include <windows.h>
+
+const char *usage =
+"This program is used by Python's os.pipe function to\n"
+"to work around a limitation in Windows 95/98.  It is\n"
+"not designed to be used as stand-alone program.";
+
+int main(int argc, char *argv[])
+{
+    BOOL bRet;
+    STARTUPINFO si;
+    PROCESS_INFORMATION pi;
+
+    if (argc != 2) {
+        MessageBox(NULL, usage, argv[0], MB_OK);
+        return 1;
+    }
+
+    /* Make child process use this app's standard files. */
+    ZeroMemory(&si, sizeof si);
+    si.cb = sizeof si;
+    si.dwFlags = STARTF_USESTDHANDLES;
+    si.hStdInput = GetStdHandle(STD_INPUT_HANDLE);
+    si.hStdOutput = GetStdHandle(STD_OUTPUT_HANDLE);
+    si.hStdError = GetStdHandle(STD_ERROR_HANDLE);
+
+    bRet = CreateProcess(
+        NULL, argv[1],
+        NULL, NULL,
+        TRUE, 0,
+        NULL, NULL,
+        &si, &pi
+        );
+
+    if (bRet) {
+        WaitForSingleObject(pi.hProcess, INFINITE);
+        CloseHandle(pi.hProcess);
+        CloseHandle(pi.hThread);
+        return 0;
+    }
+
+    return 1;
+}