I downloaded programs from rtklib.com and run the program in C++ builder 2010.I open a file called rtknavi.cbproj and run it but CB 2010 reminds me that there are errors. Maybe there are something wrong with header file. The error message of CB said:
[BCC32 Error] maskoptdlg.h(5): E2209 Unable to open include file 'System.Classes.hpp'
[BCC32 Error] maskoptdlg.h(6): E2209 Unable to open include file 'Vcl.Controls.hpp'
[BCC32 Error] maskoptdlg.h(7): E2209 Unable to open include file 'Vcl.StdCtrls.hpp'
[BCC32 Error] maskoptdlg.h(8): E2209 Unable to open include file
'Vcl.Forms.hpp'
[BCC32 Error] maskoptdlg.h(9): E2209 Unable to open include file 'Vcl.ExtCtrls.hpp'
It is said that I should add or modify path but how to do. I just want to run the program and see the results. Thank you so much.
With C++Builder 2010 these includes are invalid: the Vcl. and System. prefixes did not exist yet. For XE2 onwards, the include/unit names got that treatment (to support FireMonkey) and it is expected/recommended to use the fully qualified name of the unit in new code.
So, in summary: you opened a project that was intended for XE2 or later. You need to remove the Vcl. or System. prefixes from those #include directives (and maybe after that you will encounter some other errors, but if they are units from Embarcadero then the solution would be the same).