QPushButton具有透明背景

Question

如何在QPushButton中进行透明背景？

我有背景图片，我想让按钮透明。

我试图使用：

reg_screen_var.new_account.setStyleSheet("QPushButton {color: #F6F6F6; background: transparent}")

和

reg_screen_var.new_account.setAttribute(Qt.WA_TranslucentBackground, True)

但我得到了这个结果：

我正在使用Ubuntu 16.04。

完整代码：

from PyQt5.QtWidgets import (QApplication, QWidget, QLabel, QLineEdit, QPushButton)
from PyQt5.QtGui import (QPixmap, QFont, QMouseEvent)
from PyQt5.QtCore import (Qt, QEvent, pyqtSignal, QCoreApplication, QObject)
import sys

app = QApplication(sys.argv)
root = QWidget()


class RegisterScreenVar():

    def __init__(self):

        self.drop_logo = QLabel(root)
        self.drop_png = QPixmap("images/DropMeLogo.png")
        self.login_but = QLabel(root)
        self.login_but_img = QPixmap("images/Login_but.png")
        self.login_lab = QLabel('Login', root)
        self.pas_lab = QLabel('Password', root)
        self.login_box = QLineEdit(root)
        self.reg_box = QLineEdit(root)
        self.new_account = QPushButton("Don't have an account?", root)


reg_screen_var = RegisterScreenVar()


def drop_me():

    def register_screen(reg_screen_var, root, app):
        # design of register screen

        root.resize(1280, 720)
        root.move(400, 200)
        root.setWindowTitle('Drop_Me')
        root.setStyleSheet('background-image: url(images/reg_back.png);')

        reg_screen_var.login_but.setPixmap(reg_screen_var.login_but_img)
        reg_screen_var.login_but.setAttribute(Qt.WA_TranslucentBackground, True)
        reg_screen_var.login_but.move(520, 500)

        reg_screen_var.drop_logo.setPixmap(reg_screen_var.drop_png)
        reg_screen_var.drop_logo.setAttribute(Qt.WA_TranslucentBackground, True)
        reg_screen_var.drop_logo.move(370, 0)

        reg_screen_var.login_lab.setFont(QFont("OpenSans-Regular", 20, QFont.Bold))
        reg_screen_var.login_lab.setStyleSheet('QLabel {color: #F6F6F6}')
        reg_screen_var.login_lab.setAttribute(Qt.WA_TranslucentBackground, True)
        reg_screen_var.login_lab.move(580, 230)

        reg_screen_var.pas_lab.setFont(QFont("OpenSans-Regular", 20, QFont.Bold))
        reg_screen_var.pas_lab.setStyleSheet('QLabel {color: #F6F6F6}')
        reg_screen_var.pas_lab.setAttribute(Qt.WA_TranslucentBackground, True)
        reg_screen_var.pas_lab.move(550, 350)

        reg_screen_var.login_box.setFont(QFont("OpenSans-Regular", 18, QFont.Bold))
        reg_screen_var.login_box.setStyleSheet('QLineEdit {color:black; width: 300px}')
        reg_screen_var.login_box.move(470, 290)

        reg_screen_var.reg_box.setFont(QFont("OpenSans-Regular", 18, QFont.Bold))
        reg_screen_var.reg_box.setStyleSheet('QLineEdit {color:black; width: 300px}')
        reg_screen_var.reg_box.move(470, 400)

        reg_screen_var.new_account.setStyleSheet("QPushButton {color: #F6F6F6}")
        reg_screen_var.new_account.setFont(QFont("OpenSans-Regular", 10, QFont.Bold))
        reg_screen_var.new_account.setAutoFillBackground(True)
        reg_screen_var.new_account.move(540, 620)


        root.show()

        sys.exit(app.exec_())

    register_screen(reg_screen_var, root, app)

drop_me()

Answer 1

在Qt Designer Linux（Debian，Ubuntu）中，透明背景给我黑色， 所以Qpush Button设置的样式表：

border : 0;
background: transparent;

我花了几个小时尝试。 ：）