But you are clustering it! If you'd make a cluster, and flatten it, it would
look similar.
COPYDATASTRUCT cds = {0};
cds.dwData = IPC_ENQUEUEFILE;
cds.lpData = (void*)"c:\\test\\folder\\test.mp3;
cds.cbData = lstrlen((char*)cds.lpData)+1; // include space for null
char
SendMessage(hwnd_winamp,WM_COPYDATA,0,(LPARAM)&cds);
The Data member is, an lp member, which indicates it is a pointer to the
string, not the string itself. Also, if you look it up in the header files
of C, the actual definition is:
struct COPYDATASTRUCT{
int dwData;
int cbData;
int lpData;
}
So, the string size should be before the string, not after. The example C
code is still correct, since they point the values to elements, the order is
irrelevant.
Use DSNewPtr(Size) to get a pointer to a memory block. Use MoveBlock(*src,
*dest, size) to move your string to this block (make *src a string input,
and * dest the new pointer).. Don't forget to call DSDisposePtr(*p) to
release the memory when done.
The prototypes are in the labview directory under cintools\extcode.h . In
the call libray node, you should simply type "labview" as library name.
Your "cluster" should have three U32 (or I32) values, dwData, cbData,
lpData. You could simply make a cluster with the three parameters, and set
the dll to adapt to type.
Regards,
Wiebe.
