If( propertiesA.Flags = propertiesC.Flags ) If( propertiesA.Flags = propertiesB.Flags )ĪnimalDescription propertiesC = propertiesA wonder if anyone has ever tried that :) struct AnimalPropertiesĪnimalDescription propertiesB = propertiesA Hmmm, enums have some nice properties for bit-fields. Also you'd better not be too concerned with scoping and access control. and if you aren't worried about maintaining binary compatibility ie: you don't care where your bits live. Here's an option for bitmasks if you don't actually have a use for the individual enum values (ex. It does need to include type_traits: #include It does not require to specify manually the underlying type (as opposed to 's answer).It is type safe (it does not suppose that the underlying type is an int).It is similar to the ones mentioned above but has several improvements: In C++0x you can finally have type safe enum values. It is not space efficient, but it is type safe and gives you the same ability as a bitflag int does. If you want absolute type safety then you could simply create a std::set and store each flag inside there. The above doesn't stop you from putting an invalid flag from a different enum that has the value 1,2,4, or 8 though. This check makes sure that no other bits are set.Īssert(iFlags & ~(InvalidAnimalFlagMaxValue-1) = 0) InvalidAnimalFlagMaxValue-1 gives you a value of all the bits There is a safe way to check for out of range values though inside the int type. You can also change the enum value types if you'd like, but there is no point for this question.ĮDIT: The poster said they were concerned with type safety and they don't want a value that should not exist inside the int type.īut it would be type unsafe to put a value outside of AnimalFlags's range inside a variable of type AnimalFlags. Hence, when you make some new value outside of that range, you can't assign it without casting to a variable of your enum type. The enum type is a restricted subset of int whose value is one of its enumerated values. So you can surely bitwise OR combine them and put them together and store the result in an int. The enum values ARE of type int by default. Putting hexadecimal values like some other people suggested is not needed. Your variable should be int and the error will go away. They are effectively integers.ĪnimalFlags should NOT be the type of your variable.
PLANEPLOTTER OPERATOR FLAG PDF
See Tim Quine's PDF document "Flags in PlanePlotter" which can be found in the Plane Plotter Yahoo group Files area.In standard C++, enumerations are not type-safe. You can alter the field order with the View, Aircraft data window, Setup data window layout dialog. In Plane Plotter, open the Aircraft View ( View, Aircraft list, or click on the aircraft toolbar button), and your flags should be displayed. Navigate to the flags.txt you just edited. In Plane Plotter: Options, Flags, Define. Re place with: C:\Tools\COAA\PlanePlotter\Flags\ĥ - Tell Plane Plotter where the flags.txt file lives Using the example above:įi nd what: C:\Program Files\COAA\PlanePlotter\BMPFlags\ Open the file with Notepad, and use the Edit, Replace. However, if you have downloaded the flags.txt file the directory entries will most likely be wrong. The file should be downloaded to your main Plane Plotter directory: C:\Tools\COAA\PlanePlotter\Flags\Ġ04000 0043FF C:\Program Files\COAA\PlanePlotter\BMPFlags\Zimbabwe.bmpĠ06000 006FFF C:\Program Files\COAA\PlanePlotter\BMPFlags\Mozambique.bmp
PLANEPLOTTER OPERATOR FLAG DOWNLOAD
This document is intended as a very basic guide, and is complemented by the details given in Tim Quine's PDF document "Flags in PlanePlotter" which can be found in the Plane Plotter Yahoo group Files area.Ģ - Create a new directory in your Plane Plotter treeįor example: C:\Tools\COAA\PlanePlotter\Flags\ģ - Download (or create) the file flags.txt which lists the flag image files you have just downloaded
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