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python - 带有网格布局的中央小部件的 QMainwindow 的间距问题

问题描述

我编写了一个小 Snake 示例。

我创建了一个QMainWindow带有 acentralWidget的gridlayout. 我似乎无法正确设置间距。我想我可以用 来做到这一点setContentMargins()，所以我把它放在了我能做的任何地方，但空间仍然存在。我可能正在监督一些事情。我认为这与我的网格有关。但我没有看到问题。想法？

这是一张图片： https ://imgur.com/tHbf6tV

这是我的代码：

import sys
from PyQt5 import QtWidgets as qw
from PyQt5 import QtGui as qg
from PyQt5 import QtCore as qc

class Snake(qw.QMainWindow):

    def __init__(self, parent=None):
        super(Snake, self).__init__(parent)
        self.setContentsMargins(0,0,0,0)
        self.test()
        self.show()

    def test(self):
        self.centralwidget = qw.QWidget()
        self.setCentralWidget(self.centralwidget)
        self.centralwidget.setStyleSheet("background-color: green")

        self.gridLayout = qw.QGridLayout()
        self.gridLayout.setSpacing(0)
        # self.gridLayout.setContentsMargins(0, 0, 0, 0)

        self.vLayout = qw.QVBoxLayout(self.centralwidget)
        self.hLayout = qw.QHBoxLayout()

        self.hLayout.setContentsMargins(0, 0, 0, 0)
        self.vLayout.setContentsMargins(0, 0, 0, 0)

        # center the grid with stretch on both sides

        self.hLayout.addLayout(self.gridLayout)
        self.hLayout.addStretch(0)

        self.vLayout.addLayout(self.hLayout)
        # push grid to the top of the window
        self.vLayout.addStretch(0)

        self.buttons = []
        for i in range(24):
            l = []
            for j in range(24):
                b = qw.QPushButton()
                b.setFixedSize(20, 20)
                b.setStyleSheet("background-color: black")
                l.append(b)
                self.gridLayout.addWidget(b, i, j)
                self.gridLayout.setColumnMinimumWidth(j, 20)
            self.buttons.append(l)
            self.gridLayout.setRowMinimumHeight(i, 16)

        self.buttons[5][5].setStyleSheet("background-color: green")
        self.buttons[4][5].setStyleSheet("background-color: green")
        self.buttons[3][5].setStyleSheet("background-color: green")

if __name__ == '__main__':
    app = qw.QApplication(sys.argv)
    Menu = Snake()
    sys.exit(app.exec_())

标签： pythonpython-3.xpyqtpyqt5

解决方案

我想我已经解决了。线索是在没有 QHBoxLayout 和 QVBoxLayout 的情况下重新创建我的网格。

这是我的代码：

import sys
from PyQt5 import QtWidgets as qw
from PyQt5 import QtGui as qg
from PyQt5 import QtCore as qc


class Snake(qw.QMainWindow):
    def __init__(self, parent=None):
        super(Snake, self).__init__(parent)
        self.setContentsMargins(0, 0, 0, 0)
        self.setFixedSize(20*24,20*24)
        self.test()
        self.show()


    def test(self):
        self.centralwidget = qw.QWidget()
        self.setCentralWidget(self.centralwidget)
        self.centralwidget.setStyleSheet("background-color: green")
        self.centralwidget.setContentsMargins(0, 0, 0, 0)

        self.gridLayout = qw.QGridLayout()
        self.gridLayout.setSpacing(0)
        self.gridLayout.setContentsMargins(0,0,0,0)


        self.buttons = []
        for i in range(24):
            for j in range(24):
                b = qw.QLabel("Knopf" + str(i) + "/" + str(j))
                b.setFixedSize(20, 20)
                b.setStyleSheet("background-color: black")
                self.gridLayout.addWidget(b, i, j)
                self.gridLayout.setColumnMinimumWidth(j, 20)
            self.gridLayout.setRowMinimumHeight(i, 16)

        self.centralwidget.setLayout(self.gridLayout)


if __name__ == '__main__':
    app = qw.QApplication(sys.argv)
    Menu = Snake()
    sys.exit(app.exec_())

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