用pyside初始化一個空白的QImage

Question

我試圖在pyside gui中初始化一個空白的QImage小部件，但是它拋出錯誤，我無法從文檔中弄清楚我該怎么做，有人知道我需要做什么才能使該QImage小部件正常工作

import sys
from PySide import QtGui, QtCore
import os

class ms_ImageViewer(QtGui.QWidget):

    def __init__(self):
        super(ms_ImageViewer, self).__init__()
        self.initUI()

    def initUI(self):               

        main_layout = QtGui.QVBoxLayout()
        self.setLayout(main_layout)

        self.image = QtGui.QImage(50, 50, QtGui.QImage.Format_Indexed8)
        self.image.fill(QtGui.qRgb(50,50,50))
        button = QtGui.QPushButton('select file', self)
        main_layout.addWidget(button)
        main_layout.addWidget(self.image)

        self.setGeometry(300, 300, 600, 30)
        self.setWindowTitle('ms_image_viewer')    
        self.show()

def main():

    app = QtGui.QApplication(sys.argv)
    ex = ms_ImageViewer()
    sys.exit(app.exec_())


if __name__ == '__main__':
    main()

這是我得到的錯誤：

 /projects/Mayaseed/src/tools/ms_image_viewer.py 
    Traceback (most recent call last):
      File "/projects/Mayaseed/src/tools/ms_image_viewer.py", line 34, in <module>
        main()
      File "/projects/Mayaseed/src/tools/ms_image_viewer.py", line 29, in main
        ex = ms_ImageViewer()
      File "/projects/Mayaseed/src/tools/ms_image_viewer.py", line 9, in __init__
        self.initUI()
      File "/projects/Mayaseed/src/tools/ms_image_viewer.py", line 20, in initUI
        main_layout.addWidget(self.image)
    TypeError: 'PySide.QtGui.QBoxLayout.addWidget' called with wrong argument types:
      PySide.QtGui.QBoxLayout.addWidget(PySide.QtGui.QImage)
    Supported signatures:
      PySide.QtGui.QBoxLayout.addWidget(PySide.QtGui.QWidget, int = 0, PySide.QtCore.Qt.Alignment = 0)

Answer 1

編輯：當給出此答案時，問題是一個不同於現在的問題...

fill需要一個int參數而不是QColor元素。

采用

self.image.fill(qRgb(50,50,50))

代替

self.image.fill(QtGui.QColor(50,50,50))

我希望這在pyside上與在c ++中完全一樣。 這是文檔： http : //doc.qt.nokia.com/4.7-snapshot/qcolor.html#qRgb

Answer 2

主要問題是QImage不是小部件，因此無法將其添加到布局中。 下面是用紅色背景初始化Qimage並將其放置在QLabel小部件內的代碼。 我還將圖像格式更改為ARGB32，以使圖像使用Alpha，Red，Green和blue的4 x 8位值進行格式化。

import sys
from PySide import QtGui, QtCore
import os

class ms_ImageViewer(QtGui.QWidget):

    def __init__(self):
        super(ms_ImageViewer, self).__init__()
        self.initUI()

    def initUI(self):               

        main_layout = QtGui.QVBoxLayout()
        self.setLayout(main_layout)

        self.image = QtGui.QImage(100, 150, QtGui.QImage.Format_ARGB32)
        intial_color = QtGui.qRgb(189, 149, 39)
        self.image.fill(QtGui.qRgb(255,0,0))
        # self.image.load('/projects/test.png')
        image_label = QtGui.QLabel(" ")
        image_label.setPixmap(QtGui.QPixmap.fromImage(self.image))
        button = QtGui.QPushButton('select file', self)
        main_layout.addWidget(button)
        main_layout.addWidget(image_label)

        self.setGeometry(300, 300, 600, 30)
        self.setWindowTitle('ms_image_viewer')    
        self.show()

def main():

    app = QtGui.QApplication(sys.argv)
    ex = ms_ImageViewer()
    sys.exit(app.exec_())


if __name__ == '__main__':
    main()