Add 03-12-01-04

QDialog-信号

Author: muziing

03-QtWidgets-常用控件/12-Dialog-对话框/01-QDialog-对话框基类/04-QDialog-信号.py

@@ -0,0 +1,72 @@
+import sys
+
+from PySide6 import QtWidgets
+
+"""
+QDialog 信号
+
+accepted()               用户接受对话框或调用accept()、done(QDialog.Accepted)时发射此信号
+rejected()               用户拒绝对话框或调用reject()、done(QDialog.Rejected)时发射此信号
+finished(result: int)    当通过用户操作、done()、accept()、reject()设置了对话框的结果码时发射此信号，结果码作为参数传递
+
+"""
+
+
+class MyWidget(QtWidgets.QWidget):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.setWindowTitle("QDialog 信号")
+        self.resize(800, 600)
+        self.dialog = QtWidgets.QDialog(self)
+        self.setup_dialog()
+        self.setup_ui()
+
+    def setup_dialog(self) -> None:
+        """设置对话框窗口"""
+        self.dialog.setWindowTitle("对话框-测试信号")
+
+        accept_btn = QtWidgets.QPushButton("Accept")
+        accept_btn.clicked.connect(self.dialog.accept)  # type: ignore
+
+        reject_btn = QtWidgets.QPushButton("Reject")
+        reject_btn.clicked.connect(self.dialog.reject)  # type: ignore
+
+        done_btn = QtWidgets.QPushButton("Done")
+
+        done_btn.clicked.connect(lambda: self.dialog.done(QtWidgets.QDialog.Accepted))  # type: ignore
+        # done_btn.clicked.connect(lambda: self.dialog.done(QtWidgets.QDialog.Rejected))  # type: ignore
+
+        # 布局管理器
+        layout = QtWidgets.QHBoxLayout()
+        layout.addWidget(accept_btn)
+        layout.addWidget(reject_btn)
+        layout.addWidget(done_btn)
+        self.dialog.setLayout(layout)
+
+    def setup_ui(self) -> None:
+        """设置界面"""
+
+        # 用于显示对话框
+        open_dialog_btn = QtWidgets.QPushButton("打开对话框（Open）", self)
+        open_dialog_btn.move(200, 200)
+        open_dialog_btn.clicked.connect(self.dialog.open)  # type: ignore
+
+        # 用于显示对话框返回值
+        info_label_1 = QtWidgets.QLabel(self)
+        info_label_1.move(220, 300)
+        info_label_1.resize(200, 50)
+
+        info_label_2 = QtWidgets.QLabel(self)
+        info_label_2.move(220, 360)
+        info_label_2.resize(200, 50)
+
+        self.dialog.accepted.connect(lambda: info_label_1.setText("对话框窗口被接受了"))  # type: ignore
+        self.dialog.rejected.connect(lambda: info_label_1.setText("对话框窗口被拒绝了"))  # type: ignore
+        self.dialog.finished.connect(lambda result: info_label_2.setText(f"对话框窗口的返回值为：{result}"))  # type: ignore
+
+
+if __name__ == "__main__":
+    app = QtWidgets.QApplication(sys.argv)
+    window = MyWidget()
+    window.show()
+    sys.exit(app.exec())