Python 如何在 PyQt 中设置小部件的初始大小大于屏幕的 2/3
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How to set initial size of widget in PyQt larger than 2/3rds of screen
提问by RolKau
In the main window I have a central widget which has a natural size, and I would like to initialize it to this size. However, I do not want it to be fixed to this size; the user should be able to shrink or expand it.
在主窗口中，我有一个具有自然大小的中央小部件，我想将其初始化为这个大小。但是，我不希望它固定到这个大小；用户应该能够缩小或扩大它。
The Qt documentationstates that:
在Qt文档指出：
Note: The size of top-level widgets are constrained to 2/3 of the desktop's height and width. You can resize() the widget manually if these bounds are inadequate.
注意：顶级小部件的大小限制为桌面高度和宽度的 2/3。如果这些边界不足，您可以手动调整小部件的大小（）。
But I am unable to use the resizemethod as prescribed.
但我无法resize按规定使用该方法。
The following minimal example illustrates the problem: If width and height as given by wand his less than 2/3 of that of the screen, then the window gets the expected size. If they are greater, the window gets some truncated size.
以下最小示例说明了该问题：如果由w和给出的宽度和高度h小于屏幕宽度和高度的2/3，则窗口将获得预期大小。如果它们更大，则窗口会被截断。
#!/usr/bin/env python
from PyQt4 import QtCore, QtGui
import sys
w = 1280; h = 720
app = QtGui.QApplication (sys.argv [1:])
frm = QtGui.QFrame ()
frm.sizeHint = lambda: QtCore.QSize (w, h)
win = QtGui.QMainWindow ()
win.setCentralWidget (frm)
win.show ()
sys.exit (app.exec_ ())
回答by Achayan
This should do it for you I think
这应该为你做我认为
from PyQt4 import QtCore, QtGui
import sys
w = 2280; h = 1520
app = QtGui.QApplication (sys.argv [1:])
frm = QtGui.QFrame ()
#frm.sizeHint = lambda: QtCore.QSize (w, h)
win = QtGui.QMainWindow ()
win.setCentralWidget (frm)
win.resize(w, h)
win.show ()
sys.exit (app.exec_ ())
回答by Whitequill Riclo
The above answer is just fine, except that QApplication, QFrameand QMainWindoware notpart of QtGuiin the official PyQt5. They are part of QtWidgets.
以上答案是蛮好的，只是QApplication，QFrame和QMainWindow是不是一部分QtGui在官方PyQt5。它们是QtWidgets 的一部分。
from PyQt5.QtWidgets import QApplication, QMainWindow, QFrame
w = 900; h = 600
app = QApplication (sys.argv [1:])
frm = QFrame ()
#frm.sizeHint = lambda: QtCore.QSize (w, h)
win = QMainWindow ()
win.setCentralWidget (frm)
win.resize(w, h)
win.show ()
sys.exit (app.exec_ ())
