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This article introduces how to transplant c to D03 in python. The content is very detailed. Interested friends can use it for reference. I hope it will be helpful to you.

/ / In C

Extern void someCFunction (void)

/ / In D

Extern (C) void someCFunction ()

Extern (Windows) indicates the stdcall calling convention. It is similar to the _ _ stdcall prefix on the head c. On the window, there are things like WINAPI, APIENTRY, and PASCAL.

/ / In C

# define WINAPI _ _ stdcall

Extern WINAPI void someWin32Function (void)

/ / In D

Extern (Windows) void someWin32Function ()

Extern (System) is useful when binding libraries such as OpenGL. Use stdcall in windows and cdecl in other systems.

/ / In C

# ifdef _ WIN32

# include

# define MYAPI WINAPI

# else

# define MYAPI

# endif

Extern MYAPI void someFunc (void)

/ / In D

Extern (System) void someFunc ()

/ / follow the system

In practice, there are many techniques to add calling conventions, so check the header carefully. In d, it can be unified rather than added one by one:

/ / attribute block

Extern (C)

{

Void functionOne ()

Double functionTwo ()

}

/ / or so

Extern (C):

Void functionOne ()

Void functionTwo ()

D used to have Typedefs, which creates a new type, rather than an alias of .d, does not create a new type, but another name. Typedef is out of date, except that in construction, typedef with alias c has a large number of typedef in its d equivalent.

Typedef int foo_t

Typedef float bar_t

It is best to keep the prototype name in the d interface. The d interface should be compatible with the c interface as far as possible. In this way, examples and other code can be easily transplanted.

The first thing is how to turn the whole / float to d. Docking details document

Like this:

Alias int foo_t

Alias float bar_t

Pay attention to the length / positive length.

/ / C head

Typedef long mylong_t

Typedef unsigned long myulong_t

/ / D module

Import core.stdc.config

/ / Import is private, but alias is public and visible externally

Alias c_long mylong_t

Alias c_ulong myulong_t

Changzheng knows how to get started.

When translating stdint.h of c, there are two ways:

/ / From SDL_stdinc.h

Typedef int8_t Sint8

Typedef uint8_t Uint8

Typedef int16_t Sint16

Typedef uint16_t Uint16

...

/ / In D, no core.stdc.stdint

Alias byte Sint8

Alias ubyte Uint8

Alias short Sint16

Alias ushort Uint16

...

/ / use Import

Import core.stdc.stdint

Alias int8_t Sint8

Alias uint8_t Uint8

Alias int16_t Sint16

Alias uint16_t Uint16

...

Use the local type, the length is fixed, very direct. With core.stdc.stdint, copy a c header and replace typedef with an alias.

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