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问题： 关于Delphi对Vcl和自定义组件的跟踪！郁闷中
描述: 我有些应用程序能跟踪到Vcl和自定义组件unit，有些又不能，到底如何才能准确进行跟踪，请高手指教！
谢谢！
解决方案1: 在tools的Environment Options里面的Library 的Librarypath中加上vcl源码的路径就可以了。
但是我调试dpk的时候却不能跟到vcl源码里，等待高人指点。
解决方案2: Cannot single step into VCL source code anymore
Question:
All of a sudden I cannot single step into the VCL source code anymore. The path to $(DELPHI)\Source\Vcl is in the Enviroment Options Direcotry and I also tried to add it to the Project Options > Debug Source Path but it did not help.
It appears that $(DELPHI)\ is correct since I added a absolute
path to the list and D5 reconized this was the $(DELPHI)\ path and
changed it back to $(DELPHI)\Source\Vcl automaticlly. What happened?
Answer:
Here are two possible reasons for your situation:
1) You may accidentally have unchecked 'Use Debug DCUs' in Project | Options Compiler.
2) Perhaps you have switched 'Build with run-time packages' on.
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