On Tuesday, 16 June 2015 at 12:26:45 UTC, C2D wrote:
Hi,
I encountered the following error:
Error: function files.SHGetFolderPath (void* hwndOwner, int
nFolder, void* hToken, uint dwFlags, char* pszPath) is not
callable using argument types (typeof(null), int, typeof(null),
int, immutable(char)*)
When I'm try to run this code:
...
{
import std.utf : toUTF8;
static string cache;
wchar[MAX_PATH + 2] buf;
BOOL result = SHGetFolderPath(null, 0x23, null, 0, cache.ptr);
return cache;
}
...
extern(Windows) HRESULT SHGetFolderPath(HWND hwndOwner, int
nFolder, HANDLE hToken, DWORD dwFlags, LPTSTR pszPath);
I tried everything I know about D and CPP. What can be the
solution?
I don't know what binding to shell32.dll you use. Probably you
need set -version=Unicode to compiler flags, so WinAPI aliases
refer to W variants of functions.
Personally I prefer to call explicitly W or A variants of WinAPI
functions.
Therefore declaration should look like this:
extern(Windows) HRESULT SHGetFolderPathW(HWND hwndOwner, int
nFolder, HANDLE hToken, DWORD dwFlags, wchar* pszPath)
Or even better
extern(Windows) @nogc @system HRESULT SHGetFolderPathW(HWND
hwndOwner, int nFolder, HANDLE hToken, DWORD dwFlags, wchar*
pszPath) nothrow
to allow using this function in %nogs nothrow code.
Also you may want to take a look at my library [1] where I use
SHGetSpecialFolderPath (I know, it's deprecated, but it still
works, so why not. I don't really need to bother with access
tokens here).
[1]
https://github.com/MyLittleRobo/standardpaths/blob/master/source/standardpaths.d#L299
