我已经使用 QT Designer 创建了一个 UI。我现在尝试将其加载到我的 python 脚本中，但是窗口运行并显示为一个空的小框
问题描述 投票：0回答：1
在尝试运行 PySide6 应用程序来显示设计的 UI 时，您遇到的问题是应用程序窗口显示为空，而不显示任何设计的 UI 元素，例如选项卡、滚动区域、表格、按钮等。应用程序运行时不会崩溃或产生明确的错误（指示加载 UI 文件失败），预期的 UI 组件不会出现在应用程序窗口中。
我确保 UI 加载，并且可以在 UI 中获取对象名称，但是没有显示任何内容。
import sys
from PySide6.QtWidgets import QApplication, QMainWindow, QPushButton
from PySide6.QtUiTools import QUiLoader
from PySide6.QtCore import QFile, QIODevice
from PySide6.QtCore import (QCoreApplication, QDate, QDateTime, QLocale,
QMetaObject, QObject, QPoint, QRect,
QSize, QTime, QUrl, Qt)
from PySide6.QtGui import (QBrush, QColor, QConicalGradient, QCursor,
QFont, QFontDatabase, QGradient, QIcon,
QImage, QKeySequence, QLinearGradient, QPainter,
QPalette, QPixmap, QRadialGradient, QTransform)
from PySide6.QtWidgets import (QAbstractScrollArea, QApplication, QFrame, QGraphicsView,
QHBoxLayout, QHeaderView, QLabel, QLineEdit,
QMainWindow, QPushButton, QScrollArea, QSizePolicy,
QStatusBar, QTabWidget, QTableView, QTableWidget,
QTableWidgetItem, QVBoxLayout, QWidget)
class AppDemo(QMainWindow):
def __init__(self):
super(AppDemo, self).__init__()
self.load_ui()
def load_ui(self):
loader = QUiLoader()
ui_file = QFile('GUI v2.ui')
if not ui_file.open(QIODevice.ReadOnly):
print(f"Cannot open '{ui_file.fileName()}': {ui_file.errorString()}")
sys.exit(-1)
self.ui = loader.load(ui_file, self)
ui_file.close()
if not self.ui:
print("Cannot load UI")
sys.exit(-1)
print("UI loaded successfully")
button = self.ui.findChild(QPushButton, 'br_submit')
if button:
print(button.objectName())
else:
print("PushButton not found.")
self.setCentralWidget(self.ui)
if __name__ == '__main__':
app = QApplication(sys.argv)
window = AppDemo()
window.show()
sys.exit(app.exec())
这是.ui 文件：
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>MainWindow</class>
<widget class="QMainWindow" name="MainWindow">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>1947</width>
<height>3664</height>
</rect>
</property>
<property name="windowTitle">
<string>MainWindow</string>
</property>
<widget class="QWidget" name="centralwidget">
<property name="minimumSize">
<size>
<width>0</width>
<height>0</height>
</size>
</property>
<widget class="QTabWidget" name="tabWidget">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>1911</width>
<height>2231</height>
</rect>
</property>
<property name="sizePolicy">
<sizepolicy hsizetype="Expanding" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="minimumSize">
<size>
<width>0</width>
<height>0</height>
</size>
</property>
<property name="toolTip">
<string><html><head/><body><p><br/></p></body></html></string>
</property>
<property name="autoFillBackground">
<bool>true</bool>
</property>
<property name="currentIndex">
<number>11</number>
</property>
<widget class="QWidget" name="tab">
<property name="sizePolicy">
<sizepolicy hsizetype="Expanding" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="whatsThis">
<string><html><head/><body><p><br/></p></body></html></string>
</property>
<attribute name="title">
<string>BR Feasibility Summary</string>
</attribute>
<widget class="QFrame" name="br_input">
<property name="geometry">
<rect>
<x>0</x>
<y>80</y>
<width>311</width>
<height>201</height>
</rect>
</property>
<property name="frameShape">
<enum>QFrame::Shape::StyledPanel</enum>
</property>
<property name="frameShadow">
<enum>QFrame::Shadow::Raised</enum>
</property>
</widget>
<widget class="QFrame" name="br_Output">
<property name="geometry">
<rect>
<x>0</x>
<y>340</y>
<width>311</width>
<height>481</height>
</rect>
</property>
<property name="frameShape">
<enum>QFrame::Shape::StyledPanel</enum>
</property>
<property name="frameShadow">
<enum>QFrame::Shadow::Raised</enum>
</property>
</widget>
<widget class="QScrollArea" name="scrollArea">
<property name="geometry">
<rect>
<x>-1</x>
<y>-1</y>
<width>1171</width>
<height>861</height>
</rect>
</property>
<property name="widgetResizable">
<bool>true</bool>
</property>
<widget class="QWidget" name="scrollAreaWidgetContents">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>1169</width>
<height>859</height>
</rect>
</property>
<property name="sizePolicy">
<sizepolicy hsizetype="Expanding" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<widget class="QLabel" name="label">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>241</width>
<height>51</height>
</rect>
</property>
<property name="text">
<string><html><head/><body><p><span style=" font-size:16pt; font-weight:700; text-decoration: underline;">BR Feasibility Summary</span></p></body></html></string>
</property>
</widget>
<widget class="QTableView" name="br_input_table">
<property name="geometry">
<rect>
<x>20</x>
<y>60</y>
<width>291</width>
<height>181</height>
</rect>
</property>
<property name="sizePolicy">
<sizepolicy hsizetype="Expanding" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="sizeAdjustPolicy">
<enum>QAbstractScrollArea::SizeAdjustPolicy::AdjustToContents</enum>
</property>
<property name="alternatingRowColors">
<bool>true</bool>
</property>
<attribute name="horizontalHeaderVisible">
<bool>true</bool>
</attribute>
</widget>
<widget class="QPushButton" name="br_submit">
<property name="geometry">
<rect>
<x>100</x>
<y>260</y>
<width>111</width>
<height>41</height>
</rect>
</property>
<property name="text">
<string>Submit</string>
</property>
</widget>
<widget class="QTableView" name="br_input_table_3">
<property name="geometry">
<rect>
<x>20</x>
<y>320</y>
<width>291</width>
<height>451</height>
</rect>
</property>
<property name="sizePolicy">
<sizepolicy hsizetype="Expanding" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="sizeAdjustPolicy">
<enum>QAbstractScrollArea::SizeAdjustPolicy::AdjustToContents</enum>
</property>
</widget>
</widget>
</widget>
</widget>
<widget class="QWidget" name="assumptions1Tab">
<property name="sizePolicy">
<sizepolicy hsizetype="Expanding" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<attribute name="title">
<string>Assumptions 1</string>
</attribute>
<widget class="QScrollArea" name="scrollAreaAssumtions">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>1531</width>
<height>781</height>
</rect>
</property>
<property name="sizePolicy">
<sizepolicy hsizetype="Expanding" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="verticalScrollBarPolicy">
<enum>Qt::ScrollBarPolicy::ScrollBarAlwaysOn</enum>
</property>
<property name="horizontalScrollBarPolicy">
<enum>Qt::ScrollBarPolicy::ScrollBarAlwaysOn</enum>
</property>
<property name="sizeAdjustPolicy">
<enum>QAbstractScrollArea::SizeAdjustPolicy::AdjustIgnored</enum>
</property>
<property name="widgetResizable">
<bool>false</bool>
</property>
<widget class="QWidget" name="scrollAreaWidgetContents_2">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>1882</width>
<height>2922</height>
</rect>
</property>
<property name="sizePolicy">
<sizepolicy hsizetype="Expanding" vsizetype="Expanding">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<widget class="QLabel" name="label_64">
<property name="geometry">
<rect>
<x>560</x>
<y>2090</y>
<width>142</width>
<height>32</height>
</rect>
</property>
<property name="maximumSize">
<size>
<width>150</width>
<height>16777215</height>
</size>
</property>
<property name="text">
<string><html><head/><body><p><span style=" font-weight:700;">Energy / Fuel (USD / litre)</span></p></body></html></string>
</property>
</widget>
<widget class="QTableWidget" name="assumptionsTableMKLink_Boiklep">
<property name="geometry">
<rect>
<x>0</x>
<y>850</y>
<width>1861</width>
<height>71</height>
</rect>
</property>
</widget>
<widget class="QLabel" name="label_33">
<property name="geometry">
<rect>
<x>690</x>
<y>2320</y>
<width>258</width>
<height>16</height>
</rect>
</property>
<property name="text">
<string><html><head/><body><p><span style=" font-weight:700;">OPEX Escalation Value (% / annum from Year 7)</span></p></body></html></string>
</property>
</widget>
<widget class="QLabel" name="label_83">
<property name="geometry">
<rect>
<x>10</x>
<y>2630</y>
<width>108</width>
<height>57</height>
</rect>
</property>
<property name="sizePolicy">
<sizepolicy hsizetype="Minimum" vsizetype="Minimum">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string><html><head/><body><p><span style=" font-size:10pt; font-weight:700;">9) Revenue</span></p></body></html></string>
</property>
<property name="margin">
<number>20</number>
</property>
</widget>
<widget class="QLabel" name="label_21">
<property name="geometry">
1个回答
0
投票
投票
尝试删除：
window.show()来自：
if __name__ == '__main__':
app = QApplication(sys.argv)
window = AppDemo()
window.show()
sys.exit(app.exec())
并添加在
self.setCentralWidget(self.ui)这一行：
self.ui.show()请参阅 PySide2 QUiLoader 返回一个空窗口了解详细信息
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