From 5ac6c47775b8992dc726d6a505e421e6b1bd4ead Mon Sep 17 00:00:00 2001
From: Bo Peng <bpeng@lyx.org>
Date: Tue, 25 Jul 2006 19:30:58 +0000
Subject: [PATCH] Add development/Win32/hidecmd.c, which hides windows console
 window when starting lyx

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@14497 a592a061-630c-0410-9148-cb99ea01b6c8
---
 development/Win32/hidecmd.c | 189 ++++++++++++++++++++++++++++++++++++
 1 file changed, 189 insertions(+)
 create mode 100644 development/Win32/hidecmd.c

diff --git a/development/Win32/hidecmd.c b/development/Win32/hidecmd.c
new file mode 100644
index 0000000000..ad9710ad47
--- /dev/null
+++ b/development/Win32/hidecmd.c
@@ -0,0 +1,189 @@
+/* -*- C -*- */
+/**
+ * \file hidecmd.c
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
+ *
+ * \author hasherfrog
+ * \author Bo Peng
+ * \author Enrico Forestieri
+ *
+ * Full author contact details are available in file CREDITS.
+ */
+
+/**
+ *  This utility function is used to start lyx under windows, but
+ *  hide the console window. It is adapted from program hidec at
+ *  http://www.msfn.org/board/index.php?showtopic=49184&mode=threaded
+ *
+ *  Usage: 
+ *	hidecmd [/w] [/VAR=val] <filename> [<params>]
+ *  where: /w		 wait for program termination
+ *		/VAR=val	set VAR=val
+ *		<filename>  executable program
+ *		<params>	program parameters
+ *
+ *  How to built this program:
+ *  msvc:
+ *	cl.exe hidecmd.c /GA /O1 /link /subsystem:windows \
+ *	   kernel32.lib advapi32.lib user32.lib libcmt.lib
+ *  mingw/gcc:
+ *	gcc -mno-cygwin -mwindows hidecmd.c -o hidecmd
+ *
+ */
+
+#include <process.h>
+#include <windows.h>
+
+
+char * usage = "hidecmd [/w] [/VAR=val] <filename> [<params>]\n"
+	"  where: /w		 wait for program termination\n"
+	"		/VAR=val	set VAR=val\n"
+	"		<filename>  executable program\n"
+	"		<params>	program parameters\n";
+
+#ifdef _MSC_VER
+//
+// Using msvc, the following progma can reduce executable size from
+// 44k to 6k. I am not sure if mingw/gcc can take advantage of them
+// though.
+//
+// do not link to default libraries
+#pragma comment(linker,"/NODEFAULTLIB")
+// unite code and data section (make the program smaller)
+#pragma comment(linker,"/MERGE:.rdata=.text")
+// resolve record in section of code
+#pragma comment(linker,"/SECTION:.text,EWR")
+// the new entry point (the WinMain entry point is big)
+#pragma comment(linker,"/ENTRY:NewWinMain")
+
+void NewWinMain(void)
+#else  // mingw/gcc uses this entry point
+int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR lpszCmd, int nCmd)
+#endif
+{
+	STARTUPINFO si;
+	PROCESS_INFORMATION pi;
+	int bWait = 0;
+	DWORD exitcode = 0;
+	char delim = ' ';
+	char var[128];
+	char val[128];
+	int err = 0;
+	char * cmdLine = GetCommandLine();
+	int i;
+	// start and end of variable/value
+	char * s;
+	char * e;
+
+	// use GetCommandLine(), command name is included. Skip it
+	if (*cmdLine == '\"') {
+		delim = '\"';
+		cmdLine++;
+	}
+
+	while (*cmdLine != delim && *cmdLine != 0)
+		cmdLine++;
+
+	if (*cmdLine == delim)
+		cmdLine++;
+
+	// skip over ' ' or '\t'
+	while ((*cmdLine != 0) && ((*cmdLine == ' ') || (*cmdLine == '\t')))
+		cmdLine++; 
+
+	while (*cmdLine == '/') {
+		// /w or /W option
+		if (((cmdLine[1] == 'w') || (cmdLine[1] == 'W')) &&
+			(cmdLine[2] == ' '))
+		{
+			bWait = 1;
+			cmdLine += 3;
+		// environment variable
+		} else {
+			cmdLine++;
+
+			// get var
+			s = var;
+			e = s + sizeof(var) - 1;
+			
+			while (*cmdLine != 0 && *cmdLine != '=') {
+				if (s < e) {
+					*s++ = *cmdLine++;
+				} else {
+					cmdLine++;
+					err = 1;
+				}
+			}
+
+			// get value
+			*s = 0;
+			if (*cmdLine == '=')
+				cmdLine++;
+
+			delim = ' ';
+			
+			if (*cmdLine == '\"') {
+				delim = '\"';
+				cmdLine++;
+			}
+
+			s = val;
+			e = s + sizeof(val) - 1;
+			
+			while (*cmdLine != delim && *cmdLine != 0) {
+				if (s < e) {
+					*s++ = *cmdLine++;
+				} else {
+					cmdLine++;
+					err = 1;
+				}
+			}
+			*s = 0;
+			if (*cmdLine == delim)
+				cmdLine++;
+
+			SetEnvironmentVariable(var, val);
+			// MessageBox(0, val, var, 0);
+		}
+
+		// skip spaces
+		while ((*cmdLine != 0) && ((*cmdLine == ' ') || (*cmdLine == '\t'))) 
+			cmdLine++;
+	}
+
+	// report error if there is no parameter 
+	if (*cmdLine == 0)
+	{
+		MessageBox(0, usage, "Error: Incorrect usage", 0);
+		ExitProcess(0);
+	}
+	
+	if (err) {
+		MessageBox(0, "One of the specified environment variables or its value is too long.", "Error: Variable name or value too long", 0);
+		ExitProcess(0);
+	}
+
+	// create process with new console
+	// memset(&si, 0, sizeof(si));
+	s = (char *) &si;
+	for (i = 0; i < sizeof(si); ++i)
+		s[i] = 0x00;
+	si.cb = sizeof(si);
+	si.dwFlags = STARTF_USESHOWWINDOW;
+	si.wShowWindow = SW_HIDE;
+	if (CreateProcess(NULL, cmdLine,
+		NULL, NULL, FALSE, CREATE_NEW_CONSOLE,
+		NULL, NULL, &si, &pi))
+	{
+		if (bWait) 
+			WaitForSingleObject(pi.hProcess, INFINITE);
+		CloseHandle( pi.hProcess );
+		CloseHandle( pi.hThread );
+	}
+	else
+		exitcode = GetLastError();
+
+	/* terminate this */
+	ExitProcess(exitcode);
+}