配置文件增加写入当前app版本

app/scanner/config.cpp

@@ -561,6 +561,7 @@ int config::save_scanner_configs(const DEVCFG* cfg)
     child->create_empty(true);
     scheme = new gb::json();
     scheme->set_value("cur_sel", cfg->cur_scheme);
+    scheme->set_value("version", cfg->appVersionNum);
     child->set_value(NULL, scheme);
     delete scheme;
     for(size_t i = 0; i < cfg->schemes.size(); ++i)

app/scanner/config.h

@@ -67,6 +67,7 @@ typedef struct _dev_configs
 {
     std::string             name;       // device name
     int                     cur_scheme; // -1 is none user scheme applied, and points to the default setting which at first in 'schemes'
+    std::string             appVersionNum;
     std::vector<OPTSCHEME>  schemes;   // NOTE: the first is always the default setting, and (cur_scheme + 1) is the user customizing setting, -1 is the default setting
     bool operator==(const std::string& n)
     {

app/scanner/hg_settingdialog.cpp

@@ -43,6 +43,7 @@ hg_settingdialog::hg_settingdialog(void *handle, QWidget *parent
     m_handle = handle;
     initUi();
     on_select_scheme(cur_ind_, false);
+    getAppVersion();
 }
 
 hg_settingdialog::~hg_settingdialog()
@@ -2109,6 +2110,26 @@ void hg_settingdialog::record_changed_option(int opt, const QVariant& var)
         it->val = var;
 }
 
+void hg_settingdialog::getAppVersion()
+{
+    SANE_About  *about = nullptr;
+    unsigned int len = 0;
+    std::string versionNum;
+    if (sane_io_control(m_handle, IO_CTRL_CODE_ABOUT_INFO, about, &len) == SANE_STATUS_NO_MEM)
+    {
+        about = (SANE_About*)malloc(len + 128);
+        if (about)
+        {
+            memset(about, 0, len + 128);
+            if (sane_io_control(m_handle, IO_CTRL_CODE_ABOUT_INFO, about, &len) == SANE_STATUS_GOOD)
+            {
+                versionNum = about->version;
+                schemes_->appVersionNum = versionNum;
+            }
+        }
+    }
+}
+
 void hg_settingdialog::on_current_scheme_changed()
 {
     QString    scheme(comb_->currentText());

app/scanner/hg_settingdialog.h

@@ -99,6 +99,7 @@ private:
     int apply_setting(const SANE_Option_Descriptor* desc, int opt_ind, OPTVAL* val);
     int apply_settings(OPTSCHEME* scheme);
     void record_changed_option(int opt, const QVariant& var);
+    void getAppVersion();
 
 private:
     QVector<QPair<QPair<int, QVariant>, QString>> m_list_IdValueTitle;