#include class

[mickey]

Yes, include mymainform.h into mylightdialog.cpp. In mydialog.h you only needed the name. In the .cpp you need the actual class (probably).

sorry but #include "mymainfrom.h" in .cpp seems necessary....don't compile with only class mymainform...
these are the errors:

myLightDialog.cpp(27): error C2027: use of undefined type 'myMainForm'
myLightDialog.cpp(27): error C2227: left of '->isEnabled' must point to class/struct/union
myLightDialog.cpp(27): error C2227: left of '->tab1' must point to class/struct/union
myLightDialog.cpp(28): error C2027: use of undefined type 'myMainForm'

myLightDialog.cpp(27): error C2027: use of undefined type 'myMainForm'
myLightDialog.cpp(27): error C2227: left of '->isEnabled' must point to class/struct/union
myLightDialog.cpp(27): error C2227: left of '->tab1' must point to class/struct/union
myLightDialog.cpp(28): error C2027: use of undefined type 'myMainForm'

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