无法改变光标形状

发布于 2025-01-25 04:03:37 字数 1467 浏览 2 评论 0原文

当将右鼠标按钮按下工具栏上的按钮小部件时，我正在尝试更改光标的形状。这是一个代码段：

def eventFilter(self, obj, event):  # QEvent
    if isinstance(obj, QPushButton):
        et = event.type()
        if et == QEvent.Type.MouseButtonPress:
            if event.button() == Qt.MouseButton.RightButton:
                cur_cursor = self.toolbar_tables.cursor()  # QCursor
                if cur_cursor.shape() == Qt.CursorShape.ArrowCursor:
                    cur_cursor.setShape(Qt.CursorShape.OpenHandCursor)
                else:
                    cur_cursor.setShape(Qt.CursorShape.ArrowCursor)
                return True

达到了第一个set -shape方法，但是即使光标不会更改，即使第一个setShape确实可以在内部正确更改形状，也从未达到第二个set -shape方法。 QT系统似乎有效，因为如果我在右按钮上按下拖动操作，光标会更改为黑色敞开的手。

请任何想法。

编辑：

def eventFilter(self, obj, event):  # QEvent
    if isinstance(obj, QPushButton):
        et = event.type()  # int
        if et == QEvent.Type.MouseButtonPress:
            if event.button() == Qt.MouseButton.RightButton:
                cur_cursor = self.toolbar_tables.cursor()  # QCursor
                if cur_cursor.shape() == Qt.CursorShape.ArrowCursor:
                    cur_cursor.setShape(Qt.CursorShape.OpenHandCursor)
                else:
                    cur_cursor.setShape(Qt.CursorShape.ArrowCursor)
                self.toolbar_tables.setCursor(cur_cursor)
                # QGuiApplication.setOverrideCursor(cur_cursor)
                return True

原文

I am trying to change the shape of the cursor when the right mouse button is pressed over a pushbutton widget on a toolbar. Here's a code snippet:

def eventFilter(self, obj, event):  # QEvent
    if isinstance(obj, QPushButton):
        et = event.type()
        if et == QEvent.Type.MouseButtonPress:
            if event.button() == Qt.MouseButton.RightButton:
                cur_cursor = self.toolbar_tables.cursor()  # QCursor
                if cur_cursor.shape() == Qt.CursorShape.ArrowCursor:
                    cur_cursor.setShape(Qt.CursorShape.OpenHandCursor)
                else:
                    cur_cursor.setShape(Qt.CursorShape.ArrowCursor)
                return True

The first setShape method is reached, but the second is never reached because the cursor doesn't change, even though the first setShape does correctly change the shape internally. The Qt system seems to work because if I start a drag operation upon a right button press, the cursor changes to a black open hand.

Any ideas, please.

Edit:

def eventFilter(self, obj, event):  # QEvent
    if isinstance(obj, QPushButton):
        et = event.type()  # int
        if et == QEvent.Type.MouseButtonPress:
            if event.button() == Qt.MouseButton.RightButton:
                cur_cursor = self.toolbar_tables.cursor()  # QCursor
                if cur_cursor.shape() == Qt.CursorShape.ArrowCursor:
                    cur_cursor.setShape(Qt.CursorShape.OpenHandCursor)
                else:
                    cur_cursor.setShape(Qt.CursorShape.ArrowCursor)
                self.toolbar_tables.setCursor(cur_cursor)
                # QGuiApplication.setOverrideCursor(cur_cursor)
                return True

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