import org.eclipse.swt.SWT;
import org.eclipse.swt.internal.ole.win32.COM;
import org.eclipse.swt.internal.ole.win32.DISPPARAMS;
import org.eclipse.swt.internal.ole.win32.EXCEPINFO;
import org.eclipse.swt.internal.ole.win32.GUID;
import org.eclipse.swt.internal.ole.win32.IDispatch;
import org.eclipse.swt.internal.ole.win32.ITypeInfo;
import org.eclipse.swt.internal.ole.win32.IUnknown;
import org.eclipse.swt.internal.win32.OS;
import org.eclipse.swt.ole.win32.OLE;
import org.eclipse.swt.ole.win32.Variant;
/*
* Created on 2006-7-11
*
*
* Window - Preferences - Java - Code Style - Code Templates
*/
/**
* @author hcw
*
* TODO To change the template for this generated type comment go to Window -
* Preferences - Java - Code Style - Code Templates
*/
public class CComObject {
private GUID guid = new GUID();
//private GUID IID = new GUID();
private IDispatch Autoface = null;
private ITypeInfo TypeInfo = null;
private String FMachineName = null;
private void CreateComObject() throws Exception{
dispose();
int[] ppv = new int[1];
int ret = COM.CoCreateInstance(guid, 0,
COM.CLSCTX_INPROC_SERVER | COM.CLSCTX_LOCAL_SERVER,
COM.IIDIUnknown, ppv);
if(ret!=COM.S_OK)
OLE.error(ret);
//throw new Exception("對象創建失敗！");
IUnknown objIUnknown = new IUnknown(ppv[0]);
ppv = new int[1];
ret = objIUnknown.QueryInterface(COM.IIDIDispatch, ppv);
objIUnknown.Release();
if(ret!=COM.S_OK)
OLE.error(ret);
//throw new Exception("對象不支持Dispatch！");
Autoface = new IDispatch(ppv[0]);
ppv = new int[1];
ret = Autoface.GetTypeInfo(0, COM.LOCALE_USER_DEFAULT, ppv);
if (ret == OLE.S_OK) {
TypeInfo = new ITypeInfo(ppv[0]);
TypeInfo.AddRef();
}
}
private int getIDsOfNames(String name){
int[] rgdispid = new int[1];
String[] names = new String[]{name};
int ret = Autoface.GetIDsOfNames(guid, names, names.length, COM.LOCALE_USER_DEFAULT, rgdispid);
if (ret != COM.S_OK) return -1;
return rgdispid[0];
}
private void getVariantData(Variant aVar, int pData){
if (pData == 0) OLE.error(OLE.ERROR_OUT_OF_MEMORY);
COM.VariantInit(pData);
if ((aVar.getType() & COM.VT_BYREF) == COM.VT_BYREF) {
COM.MoveMemory(pData, new short[] {aVar.getType()}, 2);
COM.MoveMemory(pData + 8, new int[]{aVar.getByRef()}, 4);
return;
}
switch (aVar.getType()) {
case COM.VT_EMPTY :
break;
case COM.VT_BOOL :
COM.MoveMemory(pData, new short[] {aVar.getType()}, 2);
COM.MoveMemory(pData + 8, new int[]{(aVar.getBoolean()) ? COM.VARIANT_TRUE : COM.VARIANT_FALSE}, 2);
break;
case COM.VT_R4 :
COM.MoveMemory(pData, new short[] {aVar.getType()}, 2);
COM.MoveMemory(pData + 8, new float[]{aVar.getFloat()}, 4);
break;
case COM.VT_I4 :
COM.MoveMemory(pData, new short[] {aVar.getType()}, 2);
COM.MoveMemory(pData + 8, new int[]{aVar.getInt()}, 4);
break;
case COM.VT_DISPATCH :
aVar.getDispatch().AddRef();
COM.MoveMemory(pData, new short[] {aVar.getType()}, 2);
COM.MoveMemory(pData + 8, new int[]{aVar.getDispatch().getAddress()}, 4);
break;
case COM.VT_UNKNOWN :
aVar.getUnknown().AddRef();
COM.MoveMemory(pData, new short[] {aVar.getType()}, 2);
COM.MoveMemory(pData + 8, new int[]{aVar.getUnknown().getAddress()}, 4);
break;
case COM.VT_I2 :
COM.MoveMemory(pData, new short[] {aVar.getType()}, 2);
COM.MoveMemory(pData + 8, new short[]{aVar.getShort()}, 2);
break;
case COM.VT_BSTR :
COM.MoveMemory(pData, new short[] {aVar.getType()}, 2);
char[] data = (aVar.getString()+"\0").toCharArray();
int ptr = COM.SysAllocString(data);
COM.MoveMemory(pData + 8, new int[] {ptr}, 4);
break;
default :
OLE.error(SWT.ERROR_NOT_IMPLEMENTED);
}
}
private Variant setVariantData(int pData){
if (pData == 0) OLE.error(OLE.ERROR_INVALID_ARGUMENT);
Variant ret = null;
short[] dataType = new short[1];
COM.MoveMemory(dataType, pData, 2);
int type = dataType[0];
if ((type & COM.VT_BYREF) == COM.VT_BYREF) {
int[] newByRefPtr = new int[1];
OS.MoveMemory(newByRefPtr, pData + 8, 4);
return new Variant(newByRefPtr[0], COM.VT_BYREF);
}
switch (type) {
case COM.VT_EMPTY :
break;
case COM.VT_BOOL :
short[] newBooleanData = new short[1];
COM.MoveMemory(newBooleanData, pData + 8, 2);
ret = new Variant(newBooleanData[0]!=0);
break;
case COM.VT_R4 :
float[] newFloatData = new float[1];
COM.MoveMemory(newFloatData, pData + 8, 4);
ret = new Variant(newFloatData[0]);
break;
case COM.VT_I4 :
int[] newIntData = new int[1];
OS.MoveMemory(newIntData, pData + 8, 4);
ret = new Variant(newIntData[0]);
break;
case COM.VT_DISPATCH : {
int[] ppvObject = new int[1];
OS.MoveMemory(ppvObject, pData + 8, 4);
if (ppvObject[0] == 0) {
type = COM.VT_EMPTY;
break;
}
ret = new Variant(new IDispatch(ppvObject[0]));
break;
}
case COM.VT_UNKNOWN : {
int[] ppvObject = new int[1];
OS.MoveMemory(ppvObject, pData + 8, 4);
if (ppvObject[0] == 0) {
type = COM.VT_EMPTY;
break;
}
ret = new Variant(new IUnknown(ppvObject[0]));
break;
}
case COM.VT_I2 :
short[] newShortData = new short[1];
COM.MoveMemory(newShortData, pData + 8, 2);
ret = new Variant(newShortData[0]);
break;
case COM.VT_BSTR :
// get the address of the memory in which the string resides
int[] hMem = new int[1];
OS.MoveMemory(hMem, pData + 8, 4);
if (hMem[0] == 0) {
type = COM.VT_EMPTY;
break;
}
int size = COM.SysStringByteLen(hMem[0]);
if (size > 0){
char[] buffer = new char[(size + 1) /2]; // add one to avoid rounding errors
COM.MoveMemory(buffer, hMem[0], size);
ret = new Variant(new String(buffer));
} else {
ret = new Variant(""); //$NON-NLS-1$
}
break;
default :
int newPData = OS.GlobalAlloc(OS.GMEM_FIXED | OS.GMEM_ZEROINIT, Variant.sizeof);
if (COM.VariantChangeType(newPData, pData, (short) 0, COM.VT_R4) == COM.S_OK) {
ret = setVariantData(newPData);
} else if (COM.VariantChangeType(newPData, pData, (short) 0, COM.VT_I4) == COM.S_OK) {
setVariantData(newPData);
} else if (COM.VariantChangeType(newPData, pData, (short) 0, COM.VT_BSTR) == COM.S_OK) {
ret = setVariantData(newPData);
}
COM.VariantClear(newPData);
OS.GlobalFree(newPData);
break;
}
return ret;
}
private int invoke(int dispIdMember, int wFlags, Variant[] rgvarg, int[] rgdispidNamedArgs, Variant[] pVarResult) {
if (Autoface == null) return COM.E_FAIL;
DISPPARAMS pDispParams = new DISPPARAMS();
if (rgvarg != null && rgvarg.length > 0) {
pDispParams.cArgs = rgvarg.length;
pDispParams.rgvarg = OS.GlobalAlloc(COM.GMEM_FIXED | COM.GMEM_ZEROINIT, Variant.sizeof * rgvarg.length);
int offset = 0;
for (int i = rgvarg.length - 1; i >= 0 ; i--) {
getVariantData(rgvarg[i], pDispParams.rgvarg + offset);
offset += Variant.sizeof;
}
}
if (rgdispidNamedArgs != null && rgdispidNamedArgs.length > 0) {
pDispParams.cNamedArgs = rgdispidNamedArgs.length;
pDispParams.rgdispidNamedArgs = OS.GlobalAlloc(COM.GMEM_FIXED | COM.GMEM_ZEROINIT, 4 * rgdispidNamedArgs.length);
int offset = 0;
for (int i = rgdispidNamedArgs.length; i > 0; i--) {
COM.MoveMemory(pDispParams.rgdispidNamedArgs + offset, new int[] {rgdispidNamedArgs[i-1]}, 4);
offset += 4;
}
}
EXCEPINFO excepInfo = new EXCEPINFO();
int[] pArgErr = new int[1];
int pVarResultAddress = 0;
if (pVarResult != null)
pVarResultAddress = OS.GlobalAlloc(OS.GMEM_FIXED | OS.GMEM_ZEROINIT, Variant.sizeof);
int ret = Autoface.Invoke(dispIdMember, new GUID(), COM.LOCALE_USER_DEFAULT, wFlags, pDispParams, pVarResultAddress, excepInfo, pArgErr);
if(ret!=COM.S_OK)
return ret;
if (pVarResultAddress != 0){
pVarResult[0] = setVariantData(pVarResultAddress);
COM.VariantClear(pVarResultAddress);
OS.GlobalFree(pVarResultAddress);
}
if (pDispParams.rgdispidNamedArgs != 0){
OS.GlobalFree(pDispParams.rgdispidNamedArgs);
}
if (pDispParams.rgvarg != 0) {
int offset = 0;
for (int i = 0, length = rgvarg.length; i < length; i++){
COM.VariantClear(pDispParams.rgvarg + offset);
offset += Variant.sizeof;
}
OS.GlobalFree(pDispParams.rgvarg);
}
return ret;
}
/**
* 創建空對象在使用需調用CreateComObject或CreateComObjectProgID創建COM對象。
*
*/
public CComObject(){
}
/**
* 使用CLSID創建COM對象，建構后可以調用COM對象方法或屬性。
* @param sCLSID COM對象CLSID
* @throws Exception
*/
public CComObject(String sCLSID) throws Exception{
COM.IIDFromString(sCLSID.toCharArray(), guid);
CreateComObject();
}
/**
* 使用現有自動化對象接口創建COM對象。
* @param prgDispatch
*/
public CComObject(IDispatch prgDispatch){
Autoface = prgDispatch;
Autoface.AddRef();
}
/**
* 使用CLSID創建COM對象。可用于創建新的對象（原有對象將釋放）
* @param sCLSID
* @return
* @throws Exception
*/
public IDispatch CreateComObject(String sCLSID) throws Exception{
COM.IIDFromString(sCLSID.toCharArray(), guid);
CreateComObject();
return Autoface;
}
/**
* 創建遠程COM對象（未實現）。
* @param MachineName
* @param sCLSID
* @return
*/
public IDispatch CreateRemoteComObject(String MachineName, String sCLSID){
COM.IIDFromString(sCLSID.toCharArray(), guid);
return Autoface;
}
/**
* 使用ProgID創建COM對象。
* @param ProgID
* @return
* @throws Exception
*/
public IDispatch CreateComObjectProgID(String ProgID) throws Exception{
COM.CLSIDFromProgID(ProgID.toCharArray(), guid);
CreateComObject();
return Autoface;
}
/**
* 調用COM對象方法，有返回值（可變參數暫不支持）。
* @param FunctionName
* @param rgvarg
* @return
* @throws Exception
*/
public Variant CallFunction(String FunctionName, Variant[] rgvarg) throws Exception{
if(Autoface==null)
throw new Exception("對象為空");
int rgdispid = getIDsOfNames(FunctionName);
if(rgdispid==-1)
throw new Exception("方法不支持！");
Variant[] pVarResult = new Variant[1];
int ret = invoke(rgdispid, COM.DISPATCH_METHOD, rgvarg, null, pVarResult);
if(ret!=COM.S_OK)
OLE.error(ret);
//throw new Exception("方法調用失敗！");
return pVarResult[0];
}
/**
* 調用COM對象方法，無參數和返回值。
* @param FunctionName
* @throws Exception
*/
public void CallFunction(String FunctionName) throws Exception{
CallFunction(FunctionName, new Variant[]{});
}
/**
* 獲取COM對象屬性值。
* @param PropertyName
* @param rgvarg
* @return
* @throws Exception
*/
public Variant getProperty(String PropertyName, Variant[] rgvarg) throws Exception{
if(Autoface==null)
throw new Exception("對象為空");
int rgdispid = getIDsOfNames(PropertyName);
if(rgdispid==-1)
throw new Exception("屬性不支持！");
Variant[] pVarResult = new Variant[1];
int ret = invoke(rgdispid, COM.DISPATCH_PROPERTYGET, rgvarg, null, pVarResult);
if(ret!=COM.S_OK)
OLE.error(ret);
//throw new Exception("屬性獲取失敗");
return pVarResult[0];
}
/**
* 給COM對象屬性賦值。
* @param PropertyName
* @param rgvarg
* @throws Exception
*/
public void setProperty(String PropertyName, Variant[] rgvarg) throws Exception{
if(Autoface==null)
throw new Exception("對象為空");
int rgdispid = getIDsOfNames(PropertyName);
if(rgdispid==-1)
throw new Exception("屬性不支持！");
int[] rgdispidNamedArgs = new int[] {COM.DISPID_PROPERTYPUT};
int dwFlags = COM.DISPATCH_PROPERTYPUT;
for (int i = 0; i < rgvarg.length; i++) {
if ((rgvarg[i].getType() & COM.VT_BYREF) == COM.VT_BYREF)
dwFlags = COM.DISPATCH_PROPERTYPUTREF;
}
Variant[] pVarResult = new Variant[1];
int ret = invoke(rgdispid, dwFlags, rgvarg, rgdispidNamedArgs, pVarResult);
if(ret != COM.S_OK)
OLE.error(ret);
//throw new Exception("屬性設置失敗！");
}
/**
* 釋放COM對象的連接。在對象不用的時候需調用此函數，以便及時釋放對象。
*
*/
public void dispose(){
if(Autoface!=null)
Autoface.Release();
Autoface = null;
if(TypeInfo!=null)
TypeInfo.Release();
TypeInfo = null;
}
}