static Variant writeSafeArray(String string) {
// Create a one dimensional safearray containing two VT_UI1 values
// where VT_UI1 is an unsigned char
// Define cDims, fFeatures and cbElements
short cDims = 1;
short FADF_FIXEDSIZE = 0x10;
short FADF_HAVEVARTYPE = 0x80;
short fFeatures = (short) (FADF_FIXEDSIZE | FADF_HAVEVARTYPE);
int cbElements = 1;
// Create a pointer and copy the data into it
int count = string.length();
char[] chars = new char[count + 1];
string.getChars(0, count, chars, 0);
int cchMultiByte = OS.WideCharToMultiByte(CodePage, 0, chars, -1, null, 0, null, null);
if (cchMultiByte == 0) return null;
long /*int*/ pvData = OS.GlobalAlloc(OS.GMEM_FIXED | OS.GMEM_ZEROINIT, cchMultiByte);
OS.WideCharToMultiByte(CodePage, 0, chars, -1, pvData, cchMultiByte, null, null);
int cElements1 = cchMultiByte;
int lLbound1 = 0;
// Create a safearray in memory
long /*int*/ pSafeArray = OS.GlobalAlloc(OS.GMEM_FIXED | OS.GMEM_ZEROINIT, SAFEARRAY.sizeof);
SAFEARRAY safeArray = new SAFEARRAY();
safeArray.cDims = cDims;
safeArray.fFeatures = fFeatures;
safeArray.cbElements = cbElements;
safeArray.pvData = pvData;
SAFEARRAYBOUND safeArrayBound = new SAFEARRAYBOUND();
safeArray.rgsabound = safeArrayBound;
safeArrayBound.cElements = cElements1;
safeArrayBound.lLbound = lLbound1;
OS.MoveMemory(pSafeArray, safeArray, SAFEARRAY.sizeof);
// Create a variant in memory to hold the safearray
long /*int*/ pVariant = OS.GlobalAlloc(OS.GMEM_FIXED | OS.GMEM_ZEROINIT, Variant.sizeof);
short vt = (short) (OLE.VT_ARRAY | OLE.VT_UI1);
OS.MoveMemory(pVariant, new short[] {vt}, 2);
OS.MoveMemory(pVariant + 8, new long /*int*/[] {pSafeArray}, OS.PTR_SIZEOF);
// Create a by ref variant
Variant variantByRef = new Variant(pVariant, (short) (OLE.VT_BYREF | OLE.VT_VARIANT));
return variantByRef;
}
static String readSafeArray(Variant variantByRef) {
// Read a safearray that contains data of
// type VT_UI1 (unsigned shorts) which contains
// a text stream.
long /*int*/ pPostData = variantByRef.getByRef();
short[] vt_type = new short[1];
OS.MoveMemory(vt_type, pPostData, 2);
String result = null;
if (vt_type[0] == (short) (OLE.VT_BYREF | OLE.VT_VARIANT)) {
int[] pVariant = new int[1];
OS.MoveMemory(pVariant, pPostData + 8, 4);
vt_type = new short[1];
OS.MoveMemory(vt_type, pVariant[0], 2);
if (vt_type[0] == (short) (OLE.VT_ARRAY | OLE.VT_UI1)) {
long /*int*/[] pSafearray = new long /*int*/[1];
OS.MoveMemory(pSafearray, pVariant[0] + 8, OS.PTR_SIZEOF);
SAFEARRAY safeArray = new SAFEARRAY();
OS.MoveMemory(safeArray, pSafearray[0], SAFEARRAY.sizeof);
for (int i = 0; i < safeArray.cDims; i++) {
int cchWideChar =
OS.MultiByteToWideChar(CodePage, OS.MB_PRECOMPOSED, safeArray.pvData, -1, null, 0);
if (cchWideChar == 0) return null;
char[] lpWideCharStr = new char[cchWideChar - 1];
OS.MultiByteToWideChar(
CodePage,
OS.MB_PRECOMPOSED,
safeArray.pvData,
-1,
lpWideCharStr,
lpWideCharStr.length);
result = new String(lpWideCharStr);
}
}
}
return result;
}
