| Subject: | Yet another header translation from C! |
| Posted by: | David Taylor (david-tayl…@blueyonder.co.not-this-bit.nor-this-part.uk) |
| Date: | Sat, 29 Nov 2008 |
Given:
#ifdef DW_EXPORTS
#define DW_API __declspec(dllexport)
#else
#define DW_API __declspec(dllimport)
#endif
how would this translate into Delphi..
// DW_QuerySignal
// Param: nQuality [out] return signal Quality
// nStreagth [out] return signal Streagth
// nLock [out] return locked or not
// nLock>0:locked
// Return Value: 0 - succeed, 1 - fail
extern DW_API int _stdcall DW_QuerySignal(int *nQuality, int *nStrength,
int *nLock);
to import a function from a DLL?
I've left the comments in in case they help. I am confused by the single
underscore in "_stdcall". Here is what I came up with:
imterface
function DW_QuerySignal (var nQuality, nStrength, nLock: DWORD): Longint;
stdcall;
implementation
function DW_QuerySignal; external 'DWUSBAPI.dll' index 19;
In the Dependency Walker the function shows as:
Ordinal: 19
Hint: 18
Function: ?DW_QuerySignal@@YGHPAH00@Z
Entry point: 0x00001750
Thanks,
David