Improve user efficiency: Using [Ctrl+T] to delect the box

PPOCRLabel/PPOCRLabel.py

@@ -397,7 +397,7 @@ class MainWindow(QMainWindow, WindowMixin):
                         'w', 'objects', getStr('crtBoxDetail'), enabled=False)
 
         delete = action(getStr('delBox'), self.deleteSelectedShape,
-                        'backspace', 'delete', getStr('delBoxDetail'), enabled=False)
+                        'Ctrl+T', 'delete', getStr('delBoxDetail'), enabled=False)
         
         copy = action(getStr('dupBox'), self.copySelectedShape,
                       'Ctrl+C', 'copy', getStr('dupBoxDetail'),

PPOCRLabel/README.md

@@ -143,7 +143,7 @@ python PPOCRLabel.py
 ### 3.1 Shortcut keys
 
 | Shortcut keys            | Description                                      |
-| ------------------------ | ------------------------------------------------ |
+|--------------------------| ------------------------------------------------ |
 | Ctrl + Shift + R         | Re-recognize all the labels of the current image |
 | W                        | Create a rect box                                |
 | Q                        | Create a four-points box                         |
@@ -151,7 +151,7 @@ python PPOCRLabel.py
 | Ctrl + R                 | Re-recognize the selected box                    |
 | Ctrl + C                 | Copy and paste the selected box                  |
 | Ctrl + Left Mouse Button | Multi select the label box                       |
-| Backspace                | Delete the selected box                          |
+| Ctrl+T                   | Delete the selected box                          |
 | Ctrl + V                 | Check image                                      |
 | Ctrl + Shift + d         | Delete image                                     |
 | D                        | Next image                                       |

PPOCRLabel/README_ch.md

@@ -139,8 +139,8 @@ python PPOCRLabel.py --lang ch
 | Ctrl + E         | 编辑所选框标签               |
 | Ctrl + R         | 重新识别所选标记             |
 | Ctrl + C         | 复制并粘贴选中的标记框       |
-| Ctrl + 鼠标左键  | 多选标记框                   |
-| Backspace        | 删除所选框                   |
+| Ctrl + 鼠标左键    | 多选标记框                   |
+| Ctrl+T           | 删除所选框                   |
 | Ctrl + V         | 确认本张图片标记             |
 | Ctrl + Shift + d | 删除本张图片                 |
 | D                | 下一张图片                   |