# HG changeset patch
# User Bram Moolenaar <bram@vim.org>
# Date 1287835374 -7200
# Node ID fa5dee44df3fd23f96090d225dc11dbc4de7bf20
# Parent  5b154df6fcd89b4d24d34da63626cc01d9b5c0c2
updated for version 7.3.034
Problem:    Win32: may be loading .dll from the wrong directory.
Solution:   Go to the Vim executable directory when opening a library.

diff --git a/src/gui_w32.c b/src/gui_w32.c
--- a/src/gui_w32.c
+++ b/src/gui_w32.c
@@ -1260,7 +1260,7 @@ gui_mch_prepare(int *argc, char **argv)
 
     /* try and load the user32.dll library and get the entry points for
      * multi-monitor-support. */
-    if ((user32_lib = LoadLibrary("User32.dll")) != NULL)
+    if ((user32_lib = vimLoadLib("User32.dll")) != NULL)
     {
 	pMonitorFromWindow = (TMonitorFromWindow)GetProcAddress(user32_lib,
 							 "MonitorFromWindow");
@@ -4188,7 +4188,7 @@ gui_mch_set_foreground(void)
     static void
 dyn_imm_load(void)
 {
-    hLibImm = LoadLibrary("imm32.dll");
+    hLibImm = vimLoadLib("imm32.dll");
     if (hLibImm == NULL)
 	return;
 
diff --git a/src/if_lua.c b/src/if_lua.c
--- a/src/if_lua.c
+++ b/src/if_lua.c
@@ -49,7 +49,7 @@ static const char LUAVIM_FREE[] = "luaV_
 # define symbol_from_dll dlsym
 # define close_dll dlclose
 #else
-# define load_dll LoadLibrary
+# define load_dll vimLoadLib
 # define symbol_from_dll GetProcAddress
 # define close_dll FreeLibrary
 #endif
diff --git a/src/if_mzsch.c b/src/if_mzsch.c
--- a/src/if_mzsch.c
+++ b/src/if_mzsch.c
@@ -556,8 +556,8 @@ mzscheme_runtime_link_init(char *sch_dll
 
     if (hMzGC && hMzSch)
 	return OK;
-    hMzSch = LoadLibrary(sch_dll);
-    hMzGC = LoadLibrary(gc_dll);
+    hMzSch = vimLoadLib(sch_dll);
+    hMzGC = vimLoadLib(gc_dll);
 
     if (!hMzSch)
     {
diff --git a/src/if_perl.xs b/src/if_perl.xs
--- a/src/if_perl.xs
+++ b/src/if_perl.xs
@@ -106,7 +106,7 @@ typedef int perl_key;
 #define close_dll dlclose
 #else
 #define PERL_PROC FARPROC
-#define load_dll LoadLibrary
+#define load_dll vimLoadLib
 #define symbol_from_dll GetProcAddress
 #define close_dll FreeLibrary
 #endif
diff --git a/src/if_python.c b/src/if_python.c
--- a/src/if_python.c
+++ b/src/if_python.c
@@ -110,7 +110,7 @@ struct PyMethodDef { Py_ssize_t a; };
 #  define close_dll dlclose
 #  define symbol_from_dll dlsym
 # else
-#  define load_dll LoadLibrary
+#  define load_dll vimLoadLib
 #  define close_dll FreeLibrary
 #  define symbol_from_dll GetProcAddress
 # endif
diff --git a/src/if_python3.c b/src/if_python3.c
--- a/src/if_python3.c
+++ b/src/if_python3.c
@@ -88,7 +88,7 @@ static void init_structs(void);
 #  define close_dll dlclose
 #  define symbol_from_dll dlsym
 # else
-#  define load_dll LoadLibrary
+#  define load_dll vimLoadLib
 #  define close_dll FreeLibrary
 #  define symbol_from_dll GetProcAddress
 # endif
diff --git a/src/if_ruby.c b/src/if_ruby.c
--- a/src/if_ruby.c
+++ b/src/if_ruby.c
@@ -55,7 +55,7 @@
 # define symbol_from_dll dlsym
 # define close_dll dlclose
 #else
-# define load_dll LoadLibrary
+# define load_dll vimLoadLib
 # define symbol_from_dll GetProcAddress
 # define close_dll FreeLibrary
 #endif
diff --git a/src/mbyte.c b/src/mbyte.c
--- a/src/mbyte.c
+++ b/src/mbyte.c
@@ -4159,11 +4159,11 @@ iconv_enabled(verbose)
 {
     if (hIconvDLL != 0 && hMsvcrtDLL != 0)
 	return TRUE;
-    hIconvDLL = LoadLibrary(DYNAMIC_ICONV_DLL);
+    hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL);
     if (hIconvDLL == 0)		/* sometimes it's called libiconv.dll */
-	hIconvDLL = LoadLibrary(DYNAMIC_ICONV_DLL_ALT);
+	hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL_ALT);
     if (hIconvDLL != 0)
-	hMsvcrtDLL = LoadLibrary(DYNAMIC_MSVCRT_DLL);
+	hMsvcrtDLL = vimLoadLib(DYNAMIC_MSVCRT_DLL);
     if (hIconvDLL == 0 || hMsvcrtDLL == 0)
     {
 	/* Only give the message when 'verbose' is set, otherwise it might be
diff --git a/src/os_mswin.c b/src/os_mswin.c
--- a/src/os_mswin.c
+++ b/src/os_mswin.c
@@ -817,7 +817,11 @@ mch_libcall(
     BOOL fRunTimeLinkSuccess = FALSE;
 
     // Get a handle to the DLL module.
+# ifdef WIN16
     hinstLib = LoadLibrary(libname);
+# else
+    hinstLib = vimLoadLib(libname);
+# endif
 
     // If the handle is valid, try to get the function address.
     if (hinstLib != NULL)
diff --git a/src/os_win32.c b/src/os_win32.c
--- a/src/os_win32.c
+++ b/src/os_win32.c
@@ -206,44 +206,65 @@ static char *vimrun_path = "vimrun ";
 static int suppress_winsize = 1;	/* don't fiddle with console */
 #endif
 
+static char_u *exe_path = NULL;
+
     static void
 get_exe_name(void)
 {
-    char	temp[256];
-    static int	did_set_PATH = FALSE;
+    char	temp[MAXPATHL];
+    char_u	*p;
 
     if (exe_name == NULL)
     {
 	/* store the name of the executable, may be used for $VIM */
-	GetModuleFileName(NULL, temp, 255);
+	GetModuleFileName(NULL, temp, MAXPATHL - 1);
 	if (*temp != NUL)
 	    exe_name = FullName_save((char_u *)temp, FALSE);
     }
 
-    if (!did_set_PATH && exe_name != NULL)
+    if (exe_path == NULL && exe_name != NULL)
     {
-	char_u	    *p;
-	char_u	    *newpath;
-
-	/* Append our starting directory to $PATH, so that when doing "!xxd"
-	 * it's found in our starting directory.  Needed because SearchPath()
-	 * also looks there. */
-	p = mch_getenv("PATH");
-	newpath = alloc((unsigned)(STRLEN(p) + STRLEN(exe_name) + 2));
-	if (newpath != NULL)
+	exe_path = vim_strnsave(exe_name, gettail_sep(exe_name) - exe_name);
+	if (exe_path != NULL)
 	{
-	    STRCPY(newpath, p);
-	    STRCAT(newpath, ";");
-	    vim_strncpy(newpath + STRLEN(newpath), exe_name,
-					    gettail_sep(exe_name) - exe_name);
-	    vim_setenv((char_u *)"PATH", newpath);
-	    vim_free(newpath);
+	    /* Append our starting directory to $PATH, so that when doing
+	     * "!xxd" it's found in our starting directory.  Needed because
+	     * SearchPath() also looks there. */
+	    p = mch_getenv("PATH");
+	    if (STRLEN(p) + STRLEN(exe_path) + 2 < MAXPATHL);
+	    {
+		STRCPY(temp, p);
+		STRCAT(temp, ";");
+		STRCAT(temp, exe_path);
+		vim_setenv((char_u *)"PATH", temp);
+	    }
 	}
-
-	did_set_PATH = TRUE;
     }
 }
 
+/*
+ * Load library "name".
+ */
+    HINSTANCE
+vimLoadLib(char *name)
+{
+    HINSTANCE dll = NULL;
+    char old_dir[MAXPATHL];
+
+    if (exe_path == NULL)
+	get_exe_name();
+    if (exe_path != NULL && mch_dirname(old_dir, MAXPATHL) == OK)
+    {
+	/* Change directory to where the executable is, both to make sure we
+	 * find a .dll there and to avoid looking for a .dll in the current
+	 * directory. */
+	mch_chdir(exe_path);
+	dll = LoadLibrary(name);
+	mch_chdir(old_dir);
+    }
+    return dll;
+}
+
 #if defined(DYNAMIC_GETTEXT) || defined(PROTO)
 # ifndef GETTEXT_DLL
 #  define GETTEXT_DLL "libintl.dll"
@@ -254,7 +275,7 @@ static char *null_libintl_textdomain(con
 static char *null_libintl_bindtextdomain(const char *, const char *);
 static char *null_libintl_bind_textdomain_codeset(const char *, const char *);
 
-static HINSTANCE hLibintlDLL = 0;
+static HINSTANCE hLibintlDLL = NULL;
 char *(*dyn_libintl_gettext)(const char *) = null_libintl_gettext;
 char *(*dyn_libintl_textdomain)(const char *) = null_libintl_textdomain;
 char *(*dyn_libintl_bindtextdomain)(const char *, const char *)
@@ -282,26 +303,16 @@ dyn_libintl_init(char *libname)
     if (hLibintlDLL)
 	return 1;
     /* Load gettext library (libintl.dll) */
-    hLibintlDLL = LoadLibrary(libname != NULL ? libname : GETTEXT_DLL);
+    hLibintlDLL = vimLoadLib(libname != NULL ? libname : GETTEXT_DLL);
     if (!hLibintlDLL)
     {
-	char_u	    dirname[_MAX_PATH];
-
-	/* Try using the path from gvim.exe to find the .dll there. */
-	get_exe_name();
-	STRCPY(dirname, exe_name);
-	STRCPY(gettail(dirname), GETTEXT_DLL);
-	hLibintlDLL = LoadLibrary((char *)dirname);
-	if (!hLibintlDLL)
+	if (p_verbose > 0)
 	{
-	    if (p_verbose > 0)
-	    {
-		verbose_enter();
-		EMSG2(_(e_loadlib), GETTEXT_DLL);
-		verbose_leave();
-	    }
-	    return 0;
+	    verbose_enter();
+	    EMSG2(_(e_loadlib), GETTEXT_DLL);
+	    verbose_leave();
 	}
+	return 0;
     }
     for (i = 0; libintl_entry[i].name != NULL
 					 && libintl_entry[i].ptr != NULL; ++i)
@@ -430,7 +441,7 @@ PlatformId(void)
 	     * Seems like a lot of overhead to load/unload ADVAPI32.DLL each
 	     * time we verify security...
 	     */
-	    advapi_lib = LoadLibrary("ADVAPI32.DLL");
+	    advapi_lib = vimLoadLib("ADVAPI32.DLL");
 	    if (advapi_lib != NULL)
 	    {
 		pSetNamedSecurityInfo = (PSNSECINFO)GetProcAddress(advapi_lib,
diff --git a/src/proto/os_win32.pro b/src/proto/os_win32.pro
--- a/src/proto/os_win32.pro
+++ b/src/proto/os_win32.pro
@@ -1,4 +1,5 @@
 /* os_win32.c */
+HINSTANCE vimLoadLib __ARGS((char *name));
 int dyn_libintl_init __ARGS((char *libname));
 void dyn_libintl_end __ARGS((void));
 void PlatformId __ARGS((void));
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -715,6 +715,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    34,
+/**/
     33,
 /**/
     32,