默认打印设置的编辑， 文件管理器不识别U盘修复、文件管理器对中文文件名的支持修复

fileManage/FileManageWidget.cpp

@@ -4,6 +4,7 @@
 #include "SysPara.h"
 #include <QDir>
 #include <QStringList>
+#include <QFile>
 #include <QFileInfo>
 #include <QMessageBox>
 #include <QTextStream>
@@ -133,9 +134,8 @@ void FileManageWidget::onDelSelectedBtnClicked()
     auto items = m_focusedListView->selectedItems();
     for(auto item : items) {
         auto filename = item->data(AbsPathRole).toString();
-        QString cmd = QString("rm %1").arg(filename);
-        int ret = system(cmd.toLatin1().constData());
-        qInfo() << "Command: " << cmd << ", result: " << ret;
+        bool ret = QFile::remove(filename);
+        qInfo() << "Delete: " << filename << ", result: " << ret;
     }
 
     updateFileListView(m_focusedListView);
@@ -143,14 +143,27 @@ void FileManageWidget::onDelSelectedBtnClicked()
 
 void FileManageWidget::updateUDiskDevList()
 {
-    QDir dir(UDISK_DOC_ROOT_DIR);
-    if(!dir.exists()) {
-        ui->udiskSelectBox->clear();
-        return;
+    bool hasUDisk = false;
+    QFile mountsFile("/proc/mounts");
+    if (mountsFile.open(QIODevice::ReadOnly | QIODevice::Text)) {
+        QTextStream in(&mountsFile);
+        while (!in.atEnd()) {
+            const QString line = in.readLine();
+            if (line.contains("/udisk ")) {
+                hasUDisk = true;
+                break;
+            }
+        }
+        mountsFile.close();
     }
 
-    if(ui->udiskSelectBox->currentText() != tr("U盘")){
-        ui->udiskSelectBox->clear();
+    if (!hasUDisk) {
+        QDir dir(UDISK_DOC_ROOT_DIR);
+        hasUDisk = dir.exists();
+    }
+
+    ui->udiskSelectBox->clear();
+    if (hasUDisk) {
         ui->udiskSelectBox->addItem(tr("U盘"));
         ui->udiskSelectBox->setCurrentIndex(0);
     }
@@ -227,10 +240,10 @@ void FileManageWidget::copyFiles(QListWidget *from, QListWidget *to)
 
     auto items = from->selectedItems();
     for(auto item : items) {
-        auto filename = item->data(AbsPathRole).toString();
-        QString cmd = QString("cp %1 %2").arg(filename).arg(destPath);
-        auto ret = system(cmd.toLatin1().constData());
-        qInfo() << "Command: " << cmd << ", result: " << ret;
+        auto srcPath = item->data(AbsPathRole).toString();
+        auto destFilePath = destPath + QFileInfo(srcPath).fileName();
+        bool ret = QFile::copy(srcPath, destFilePath);
+        qInfo() << "Copy: " << srcPath << " -> " << destFilePath << ", result: " << ret;
     }
 }
 
@@ -275,4 +288,4 @@ void FileManageWidget::applyStyleSheet()
             )";
 
     this->setStyleSheet(styleSheet);
-}
+}