From 890d4a1c787fc520c33f58b04839b546776ae242 Mon Sep 17 00:00:00 2001
From: gb <741021719@qq.com>
Date: Wed, 23 Aug 2023 10:22:31 +0800
Subject: [PATCH] add get version of driver API

---
 hgsane/main.c          |  5 +++++
 hgsane/sane_hg_mdw.cpp | 13 +++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/hgsane/main.c b/hgsane/main.c
index 0eebb09..c5f8e21 100644
--- a/hgsane/main.c
+++ b/hgsane/main.c
@@ -25,6 +25,7 @@ extern SANE_Status inner_sane_init_ex(SANE_Int* version_code, sane_callback cb,
 extern SANE_Status inner_sane_io_control(SANE_Handle h, unsigned long code, void* data, unsigned* len);
 extern const char* inner_sane_err_desc(SANE_Status err);
 extern SANE_Status inner_sane_read_ext(SANE_Img_Ext_Info* ext_info, SANE_Int* len);
+extern SANE_Status inner_sane_ex_get_driver_version(SANE_Int* hh, SANE_Int* hl, SANE_Int* lh, SANE_Int* ll);
 
 /// <summary>
 /// 导出接口
@@ -114,3 +115,7 @@ SANE_Status sane_read_ext_info(SANE_Img_Ext_Info* ext_info, SANE_Int* len)
 {
 	return inner_sane_read_ext(ext_info, len);
 }
+SANE_Status sane_ex_get_driver_version(SANE_Int* hh, SANE_Int* hl, SANE_Int* lh, SANE_Int* ll)
+{
+	return inner_sane_ex_get_driver_version(hh, hl, lh, ll);
+}
diff --git a/hgsane/sane_hg_mdw.cpp b/hgsane/sane_hg_mdw.cpp
index 0fe4d27..b21f76a 100644
--- a/hgsane/sane_hg_mdw.cpp
+++ b/hgsane/sane_hg_mdw.cpp
@@ -2628,6 +2628,19 @@ extern "C" {	// avoid compiler exporting name in C++ style !!!
 	{
 		return SANE_STATUS_UNSUPPORTED;
 	}
+	SANE_Status inner_sane_ex_get_driver_version(SANE_Int* hh, SANE_Int* hl, SANE_Int* lh, SANE_Int* ll)
+	{
+		if (hh)
+			*hh = VERSION_MAJOR;
+		if (hl)
+			*hl = VERSION_MINOR;
+		if (lh)
+			*lh = VERSION_YEAR;
+		if (ll)
+			*ll = GET_BUILD_VER;
+
+		return SANE_STATUS_GOOD;
+	}
 
 	void sanei_debug_msg(int level, int max_level, const char* be, const char* fmt, va_list ap)
 	{