• Karl Bochert (10/10) Jul 02 2006 I have been attempting to access the windows api from D, and there seem ...
• Chris Nicholson-Sauls (26/41) Jul 02 2006 Simple. Because there is no such function as GetConsoleTitle(). There ...
• Don Clugston (4/19) Jul 03 2006 There are many windows APIs missing from Phobos. A relatively complete

Karl Bochert <Karl_member pathlink.com> writes:

I have been attempting to access the windows api from D, and there seem to be
api calls missing from std.windows.windows.

I have added to phobos:
export   HANDLE GetStdHandle(DWORD dev);
export   DWORD GetConsoleTitle(LPSTR buf, DWORD len);
export   BOOL AllocConsole();

but when I compile a program using them, I get from the linker:
winapp.obj(winapp)
Error 42: Symbol Undefined _GetConsoleTitle 8

Why does GetConsoleTitle() fail when the other 2 don't??

Chris Nicholson-Sauls <ibisbasenji gmail.com> writes:

Karl Bochert wrote:
 I have been attempting to access the windows api from D, and there seem to be
 api calls missing from std.windows.windows.
 
 I have added to phobos:
 export   HANDLE GetStdHandle(DWORD dev);
 export   DWORD GetConsoleTitle(LPSTR buf, DWORD len);
 export   BOOL AllocConsole();
 
 but when I compile a program using them, I get from the linker:
 winapp.obj(winapp)
 Error 42: Symbol Undefined _GetConsoleTitle 8
 
 Why does GetConsoleTitle() fail when the other 2 don't??
 
 

Simple.  Because there is no such function as GetConsoleTitle().  There are,
however, both 
GetConsoleTitleA() for ANSI and GetConsoleTitleW() for Unicode.  This is a
common 
implementation detail throughout the Win32 API.  In C/C++ there is a macro
defined for 
each such function as the base name without the ANSI/Unicode suffix, as nothing
more than 
a transparent wrap to one of the implementations.

Something like:

[code]
void SomeFuncA(HANDLE, LPSTR);
void SomeFuncW(HANDLE, LPWSTR);

#ifdef _UNICODE_
#define SomeFunc(_A, _B) SomeFuncW(_A, _B)
#else
#define SomeFunc(_A, _B) SomeFuncA(_A, _B)
#endif
[/code]

Simply change your additions to the following:






Note that you don't neccessarily need the 'export' attribute -- so far as I am
aware 
anyhow -- and also that you don't have to add these to Phobos.  Instead, you
may declare 
them in an import module in your own project.

-- Chris Nicholson-Sauls

Don Clugston <dac nospam.com.au> writes:

Karl Bochert wrote:
 I have been attempting to access the windows api from D, and there seem to be
 api calls missing from std.windows.windows.
 
 I have added to phobos:
 export   HANDLE GetStdHandle(DWORD dev);
 export   DWORD GetConsoleTitle(LPSTR buf, DWORD len);
 export   BOOL AllocConsole();
 
 but when I compile a program using them, I get from the linker:
 winapp.obj(winapp)
 Error 42: Symbol Undefined _GetConsoleTitle 8
 
 Why does GetConsoleTitle() fail when the other 2 don't??
 
 

There are many windows APIs missing from Phobos. A relatively complete 
windows API is available from the Bindings project at www.dsource.org.
(It's a work-in-progress, but already quite usable).