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GTK+ Reference Manual | ![]() |
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GTK+ 3 removes many implementation details and struct members from its public headers. To ensure that your application does not have problems with this, you define the preprocessor symbol GSEAL_ENABLE. This will make the compiler catch all uses of direct access to struct fields so that you can go through them one by one and replace them with a call to an accessor function instead.
make CFLAGS+="-DGSEAL_ENABLE"