QGraphicsItem设置不可被移动和指定鼠标可以点击按键

//获取是否设置可移动状态
bool acceptHoverEvents() const;
//设置是否可以被移动
void setAcceptHoverEvents(bool enabled);

一般还配合this->setFlag(QGraphicsItem::ItemIsMovable, movable);来使用。

//获取鼠标可以点击按键
Qt::MouseButtons acceptedMouseButtons() const;
//设置鼠标可以点击按键
void setAcceptedMouseButtons(Qt::MouseButtons buttons);

支持的鼠标类型有：

enum MouseButton {
NoButton = 0x00000000,
LeftButton = 0x00000001,
RightButton = 0x00000002,
MidButton = 0x00000004, // ### Qt 6: remove me
MiddleButton = MidButton,
BackButton = 0x00000008,
XButton1 = BackButton,
ExtraButton1 = XButton1,
ForwardButton = 0x00000010,
XButton2 = ForwardButton,
ExtraButton2 = ForwardButton,
TaskButton = 0x00000020,
ExtraButton3 = TaskButton,
ExtraButton4 = 0x00000040,
ExtraButton5 = 0x00000080,
ExtraButton6 = 0x00000100,
ExtraButton7 = 0x00000200,
ExtraButton8 = 0x00000400,
ExtraButton9 = 0x00000800,
ExtraButton10 = 0x00001000,
ExtraButton11 = 0x00002000,
ExtraButton12 = 0x00004000,
ExtraButton13 = 0x00008000,
ExtraButton14 = 0x00010000,
ExtraButton15 = 0x00020000,
ExtraButton16 = 0x00040000,
ExtraButton17 = 0x00080000,
ExtraButton18 = 0x00100000,
ExtraButton19 = 0x00200000,
ExtraButton20 = 0x00400000,
ExtraButton21 = 0x00800000,
ExtraButton22 = 0x01000000,
ExtraButton23 = 0x02000000,
ExtraButton24 = 0x04000000,
AllButtons = 0x07ffffff,
MaxMouseButton = ExtraButton24,
// 4 high-order bits remain available for future use (0x08000000 through 0x40000000).
MouseButtonMask = 0xffffffff
};

只允许右键点击
setAcceptedMouseButtons(Qt::RightButton);
注意：这是可以通过”|“来设置多个按键的。