Question

I have extended the UI file resulting from the Plugin builder with Qt Creator. Just added some checkboxes and a combobox, named layercombo to the form. The application is named jacktest.py. It uses an intermediate file jackdialog.py (generated from the plugin builder, left unchanged).

Compiled the UI file and the resource file. Then added some code to the plugin and tested this. It s no problem to get the available layer names in a QMessagebox. But how to add these to the combobox ? Should be simple, but no option succeeds in referencing the combobox.

错误消息: 属性错误: jacktest 实例没有属性层孔布。

我最近尝试的结果是:

# run method that performs all the real work
def run(self):

    # create and show the dialog
    dlg = jacktestDialog()
    # show the dialog
    dlg.show()
    result = dlg.exec_()
    for layer in self.iface.legendInterface().layers():
        if layer.type() == QgsMapLayer.VectorLayer:
           QMessageBox.information( self.iface.mainWindow(), "Info", layer.name())
           self.layercombo.Items.Insert(0, layer.name())
    # See if OK was pressed
    if result == 1:
        # do something useful (delete the line containing pass and
        # substitute with your code
        pass

Answer 1

当您正在设置 discombo 项时, 您正试图引用当前类( 这不是您的对话框) 。

替换:

self.layercombo.Items.Insert(0, layer.name())

与

dlg.ui.layercombo.Items.Insert(0, layer.name())

您的代码仍然无法正确工作, 因为 exec_ () 正在屏蔽, 等待返回, 以便您在隐性对话框中添加项目。

试试这个代替:

# create and show the dialog
dlg = jacktestDialog()
# show the dialog
for layer in self.iface.legendInterface().layers():
    if layer.type() == QgsMapLayer.VectorLayer:
       QMessageBox.information( self.iface.mainWindow(), "Info", layer.name())
       dlg.ui.layercombo.Items.Insert(0, layer.name())
result = dlg.exec_()

Answer 2

在运行模块中开发一个信号( 代码: def run (自) :)

QObject. connect( dlg. ui. layercombo, Signal( 目前的 Index changed (int) ), self. select_ one)

选择一的代码是:

def select_one(self):
    comboindex = dlg.ui.layercombo.currentIndex()
    QMessageBox.information(self.iface.mainWindow(), "Info", comboindex)

错误消息 :

comboindex = dlg.ui.layercombo.currentIndex() NameError: global name dlg is not defined

假设我必须在函数调用中引用 dlg 作为参数, 但直到现在才起作用。

友情链接