Question

在编写按钮功能之前，self.clicked不会在MOUSEBUTTONUP之后保持其值，是否有更好的方法或方法来保持self.clicked的值？

代码：

def check_clicked(self,event):
    if event.type == pg.MOUSEBUTTONDOWN and event.button == 1:
            if self.rect.collidepoint(event.pos):
                self.clicked = True
    elif event.type == pg.MOUSEBUTTONUP:
            if self.clicked == True:
                return True
            else:
                return False

Answer 1

您的缩进已关闭，尽管这会引发错误；

def check_clicked(self,event):
if event.type == pg.MOUSEBUTTONDOWN and event.button == 1:
        if self.rect.collidepoint(event.pos):
            self.clicked = True
elif event.type == pg.MOUSEBUTTONUP: #<<<<< Change indentation here
        if self.clicked == True:
            return True
        else:
            return False

假设您的缩进正确，我认为问题在于您实际上并没有定义self.clicked，只是检查它是否正确。

尝试以下操作；

elif event.type == pg.MOUSEBUTTONUP:
    self.clicked = True
    if self.clicked == True:
        return True
    else:
        return False

尽管在定义self.clicked之前检查def check_clicked(self,event): if event.type == pg.MOUSEBUTTONDOWN and event.button == 1: if self.rect.collidepoint(event.pos): self.clicked = True elif event.type == pg.MOUSEBUTTONUP: self.clicked = True return True是否为真是多余的。只需使用；

Regex.Matches( "Your String" , System.Environment.NewLine).Count ;

Answer 2

点对点-您甚至可能要检查UP事件的碰撞点，以确保用户想要点击或他/她改变了主意。其次，您可以使用“ self.down”变量来跟踪按钮是否已按下，并仅在看到UP事件时将其设置为“ clicked”。

def check_clicked(self,event):
    if event.type == pg.MOUSEBUTTONDOWN and event.button == 1:
            self.clicked = False
            self.down = False
            if self.rect.collidepoint(event.pos):
                self.down = True
    elif event.type == pg.MOUSEBUTTONUP:
            if self.down and self.rect.collidepoint(event.pos):
                self.clicked = True
            else:
                self.clicked = False
            self.down = False

    return self.clicked

python中的按钮功能，self.clicked

2 个答案: