Equivalent of #region for C++

Question

What\'s the C++ equivalent of #region for C++ so I can put in custom code collapsible bits and make my code a little easier to read?

Answer 1

Kate, KDevelop and all other text editors and IDEs which use Katepart supports marking regions with //BEGIN and //END markers.

// BEGIN GPT entity types
#define GPT_ENT_TYPE_UNUSED \
    {0x00000000,0x0000,0x0000,0x00,0x00,{0x00,0x00,0x00,0x00,0x00,0x00}}
#define GPT_ENT_TYPE_EFI \
    {0xc12a7328,0xf81f,0x11d2,0xba,0x4b,{0x00,0xa0,0xc9,0x3e,0xc9,0x3b}}
#define GPT_ENT_TYPE_MBR \
    {0x024dee41,0x33e7,0x11d3,0x9d,0x69,{0x00,0x08,0xc7,0x81,0xf3,0x9f}}
// END

You will be able to collapse a region defined in such way.

Answer 2

There is no equivalent. The #region feature is part of the C# specification.

C++ has no such equivalent. You could possibly mimic it with specially formatted comments, but this would be editor specific.

For Visual Studio you can use:

#pragma region name
...
#pragma endregion name

Answer 3

The Region keyword is IDE specific and affects rendering in Visual Studio. The nearest equivalent is #pragma Region which is applicable to Visual Studio only .

Code example from MSDN

// pragma_directives_region.cpp
#pragma region Region_1
void Test() {}
void Test2() {}
void Test3() {}
#pragma endregion Region_1

int main() {}

Answer 4

I've been using

#ifndef ANY_NAME_FOR_THIS_REGION
    ...
#endif

for several projects during the last couple of years and that suits me (including collapsible blocks). as an addition, i can disable the block using #define ANY_NAME_FOR_THIS_REGION just above it.

Answer 5

C++Builder does support this, but you must declare the region as:

#pragma region BLAH

.....

#pragma end_region

You must use end_region for C++Builder, but it will work, and it will collapse the region!

Answer 6

There is no equivalent.

Most good editors or IDEs will let you collapse functions, if not also if/else/while/for/etc.