如何从QAbstractScrollArea中提取完整文本数据？——基于IDA Pro的IDApython技术问询

Great question! I’ve run into this exact issue before—IDAPython’s basic disassembly functions often miss the segment info, comments, and other metadata we need. Let’s break down two reliable solutions, starting with the simplest (and most future-proof) one:

Method 1: Use IDAPython's Built-in get_disasm_line (No Qt Required) #

You might not have noticed that get_disasm_line has a flag parameter that lets you retrieve the full, complete disassembly line including segment, address, instruction, and comments. This is way more reliable than messing with Qt widgets, since it uses IDA’s official API.

Here’s how to use it:

import idautils
import idaapi

# Get the current address (or target a specific address)
ea = idaapi.here()

# Retrieve the full disassembly line with all components
# GDLF_ALL ensures we get segment, address, instruction, and comments
full_line = idaapi.get_disasm_line(ea, idaapi.GDLF_ALL)
print(full_line)
# Example output: .text:00401020 push offset unk_4543A4 ; Src

If you need to extract lines for an entire function or range, loop through addresses with idautils.FuncItems:

func_ea = idaapi.get_func(ea).start_ea
for addr in idautils.FuncItems(func_ea):
    print(idaapi.get_disasm_line(addr, idaapi.GDLF_ALL))

Method 2: Extract Text via the Qt Widget (For Entire View Content) #

If you specifically need to scrape the full visible (or complete) content of the IDA View-A widget, you’re right that QAbstractScrollArea is just a container—you need to access its underlying content widget first.

Here’s how to do it:

from PyQt5 import QtWidgets, QtGui
import idaapi

# Locate the IDA View-A widget
tform = idaapi.find_widget("IDA View-A")
if not tform:
    print("Could not find IDA View-A widget")
    exit()

# Convert the IDA widget to a PyQt widget
view_widget = idaapi.PluginForm.FormToPyQtWidget(tform)

# Access the actual content widget inside the scroll area's viewport
# IDA's disassembly view is a custom Qt widget, typically the first child of the viewport
content_widget = view_widget.viewport().children()[0]

# Option 1: Copy all text to clipboard and read it (most version-reliable)
content_widget.selectAll()
content_widget.copy()
clipboard = QtGui.QApplication.clipboard()
full_view_text = clipboard.text()
print(full_view_text)

# Option 2: Access internal line-reading methods (IDA-specific)
# Some IDA versions support direct line access via the content widget:
# for line_num in range(content_widget.lineCount()):
#     line_text = content_widget.get_line_text(line_num)
#     print(line_text)

Notes on Method 2: #

• The widget structure might shift slightly between IDA versions, so children()[0] may need adjustment for older/newer builds.
• The clipboard method is more consistent across versions since it leverages IDA’s native copy functionality.

Why Your Initial Qt Approach Didn’t Work #

QAbstractScrollArea itself doesn’t store the text—it’s just a scrollable container. The actual disassembly content lives in a child widget inside its viewport() (the scrollable region). By targeting that child widget, you can access the text data you need.

内容的提问来源于stack exchange，提问作者Unlockable