feat(projects): 新增PySide综合案例示例代码

projects/gui/widget.py

@@ -0,0 +1,53 @@
+import sys
+
+from PySide6.QtWidgets import QApplication, QLabel, QLineEdit, QVBoxLayout, QWidget
+
+
+class MyWidget(QWidget):
+    def __init__(self):
+        super().__init__()
+        self.resize(200, 200)
+
+        label = QLabel()
+        label.setText("Hello, World!")
+        label.setStyleSheet(
+            """
+            QLabel {
+                font-size: 20px;
+                text-align: center;
+                margin: auto 50%;
+                padding-bottom: 5px;
+            }
+            """
+        )
+        self.label = label
+
+        editor = QLineEdit()
+        editor.setPlaceholderText("input your name here.")
+        editor.textChanged.connect(self.echo)
+        self.editor = editor
+
+        layout = QVBoxLayout()
+        layout.addWidget(self.label)
+        layout.addWidget(self.editor)
+
+        self.setLayout(layout)
+
+    def echo(self, name: str = ""):
+        if name:
+            msg = f"Hello, {name}!"
+        else:
+            msg = f"Hello, world!"
+        self.label.setText(msg)
+
+
+def main():
+    app = QApplication()
+    widget = MyWidget()
+    widget.show()
+
+    sys.exit(app.exec())
+
+
+if __name__ == '__main__':
+    main()