Examples with IntByReference com.sun.jna.ptr.IntByReference used on opensource projects

Example 46 with IntByReference

use of com.sun.jna.ptr.IntByReference in project jna by java-native-access.

the class ByReferenceArgumentsTest method testIntByReference.

public void testIntByReference() {
    IntByReference iref = new IntByReference();
    lib.incrementInt32ByReference(iref);
    assertEquals("Int argument not modified", 1, iref.getValue());
}

Example 47 with IntByReference

use of com.sun.jna.ptr.IntByReference in project jna by java-native-access.

the class COMBindingBaseObject method oleMethod.

protected HRESULT oleMethod(int nType, VARIANT.ByReference pvResult, IDispatch pDisp, DISPID dispId, VARIANT[] pArgs) throws COMException {
    if (pDisp == null)
        throw new COMException("pDisp (IDispatch) parameter is null!");
    // variable declaration
    int _argsLen = 0;
    VARIANT[] _args = null;
    DISPPARAMS.ByReference dp = new DISPPARAMS.ByReference();
    EXCEPINFO.ByReference pExcepInfo = new EXCEPINFO.ByReference();
    IntByReference puArgErr = new IntByReference();
    // make parameter reverse ordering as expected by COM runtime
    if ((pArgs != null) && (pArgs.length > 0)) {
        _argsLen = pArgs.length;
        _args = new VARIANT[_argsLen];
        int revCount = _argsLen;
        for (int i = 0; i < _argsLen; i++) {
            _args[i] = pArgs[--revCount];
        }
    }
    // Handle special-case for property-puts!
    if (nType == OleAuto.DISPATCH_PROPERTYPUT) {
        dp.setRgdispidNamedArgs(new DISPID[] { OaIdl.DISPID_PROPERTYPUT });
    }
    // Build DISPPARAMS
    if (_argsLen > 0) {
        dp.setArgs(_args);
        // write 'DISPPARAMS' structure to memory
        dp.write();
    }
    // Apply "fix" according to
    // https://www.delphitools.info/2013/04/30/gaining-visual-basic-ole-super-powers/
    // https://msdn.microsoft.com/en-us/library/windows/desktop/ms221486(v=vs.85).aspx
    //
    // Summary: there are methods in the word typelibrary that require both
    // PROPERTYGET _and_ METHOD to be set. With only one of these set the call
    // fails.
    //
    // The article from delphitools argues, that automation compatible libraries
    // need to be compatible with VisualBasic which does not distingish methods
    // and property getters and will set both flags always.
    //
    // The MSDN article advises this behaviour: "[...] Some languages cannot 
    // distinguish between retrieving a property and calling a method. In this 
    //case, you should set the flags DISPATCH_PROPERTYGET and DISPATCH_METHOD.
    // [...]"))
    //
    // This was found when trying to bind InchesToPoints from the _Application 
    // dispatch interface of the MS Word 15 type library
    //
    // The signature according the ITypeLib Viewer (OLE/COM Object Viewer):
    // [id(0x00000172), helpcontext(0x09700172)]
    // single InchesToPoints([in] single Inches);
    final int finalNType;
    if (nType == OleAuto.DISPATCH_METHOD || nType == OleAuto.DISPATCH_PROPERTYGET) {
        finalNType = OleAuto.DISPATCH_METHOD | OleAuto.DISPATCH_PROPERTYGET;
    } else {
        finalNType = nType;
    }
    // Make the call!
    HRESULT hr = pDisp.Invoke(dispId, new REFIID(Guid.IID_NULL), LOCALE_SYSTEM_DEFAULT, new WinDef.WORD(finalNType), dp, pvResult, pExcepInfo, puArgErr);
    COMUtils.checkRC(hr, pExcepInfo, puArgErr);
    return hr;
}

Example 48 with IntByReference

use of com.sun.jna.ptr.IntByReference in project jna by java-native-access.

the class Advapi32Util method getFileSecurity.

public static ACCESS_ACEStructure[] getFileSecurity(String fileName, boolean compact) {
    int infoType = WinNT.DACL_SECURITY_INFORMATION;
    int nLength = 1024;
    boolean repeat = false;
    Memory memory = null;
    do {
        repeat = false;
        memory = new Memory(nLength);
        IntByReference lpnSize = new IntByReference();
        boolean succeded = Advapi32.INSTANCE.GetFileSecurity(fileName, infoType, memory, nLength, lpnSize);
        if (!succeded) {
            int lastError = Kernel32.INSTANCE.GetLastError();
            memory.clear();
            if (W32Errors.ERROR_INSUFFICIENT_BUFFER != lastError) {
                throw new Win32Exception(lastError);
            }
        }
        int lengthNeeded = lpnSize.getValue();
        if (nLength < lengthNeeded) {
            repeat = true;
            nLength = lengthNeeded;
            memory.clear();
        }
    } while (repeat);
    SECURITY_DESCRIPTOR_RELATIVE sdr = new WinNT.SECURITY_DESCRIPTOR_RELATIVE(memory);
    memory.clear();
    ACL dacl = sdr.getDiscretionaryACL();
    ACCESS_ACEStructure[] aceStructures = dacl.getACEStructures();
    if (compact) {
        Map<String, ACCESS_ACEStructure> aceMap = new HashMap<String, ACCESS_ACEStructure>();
        for (ACCESS_ACEStructure aceStructure : aceStructures) {
            boolean inherted = ((aceStructure.AceFlags & WinNT.VALID_INHERIT_FLAGS) != 0);
            String key = aceStructure.getSidString() + "/" + inherted + "/" + aceStructure.getClass().getName();
            ACCESS_ACEStructure aceStructure2 = aceMap.get(key);
            if (aceStructure2 != null) {
                int accessMask = aceStructure2.Mask;
                accessMask = accessMask | aceStructure.Mask;
                aceStructure2.Mask = accessMask;
            } else {
                aceMap.put(key, aceStructure);
            }
        }
        return aceMap.values().toArray(new ACCESS_ACEStructure[aceMap.size()]);
    }
    return aceStructures;
}

Example 49 with IntByReference

use of com.sun.jna.ptr.IntByReference in project jna by java-native-access.

the class Advapi32Util method getUserName.

/**
	 * Retrieves the name of the user associated with the current thread.
	 *
	 * @return A user name.
	 */
public static String getUserName() {
    char[] buffer = new char[128];
    IntByReference len = new IntByReference(buffer.length);
    boolean result = Advapi32.INSTANCE.GetUserNameW(buffer, len);
    if (!result) {
        switch(Kernel32.INSTANCE.GetLastError()) {
            case W32Errors.ERROR_INSUFFICIENT_BUFFER:
                buffer = new char[len.getValue()];
                break;
            default:
                throw new Win32Exception(Native.getLastError());
        }
        result = Advapi32.INSTANCE.GetUserNameW(buffer, len);
    }
    if (!result) {
        throw new Win32Exception(Native.getLastError());
    }
    return Native.toString(buffer);
}

Example 50 with IntByReference

use of com.sun.jna.ptr.IntByReference in project jna by java-native-access.

the class Advapi32Util method getSecurityDescriptorForFile.

private static Memory getSecurityDescriptorForFile(final String absoluteFilePath) {
    final int infoType = OWNER_SECURITY_INFORMATION | GROUP_SECURITY_INFORMATION | DACL_SECURITY_INFORMATION;
    final IntByReference lpnSize = new IntByReference();
    boolean succeeded = Advapi32.INSTANCE.GetFileSecurity(absoluteFilePath, infoType, null, 0, lpnSize);
    if (!succeeded) {
        final int lastError = Kernel32.INSTANCE.GetLastError();
        if (W32Errors.ERROR_INSUFFICIENT_BUFFER != lastError) {
            throw new Win32Exception(lastError);
        }
    }
    final int nLength = lpnSize.getValue();
    final Memory securityDescriptorMemoryPointer = new Memory(nLength);
    succeeded = Advapi32.INSTANCE.GetFileSecurity(absoluteFilePath, infoType, securityDescriptorMemoryPointer, nLength, lpnSize);
    if (!succeeded) {
        securityDescriptorMemoryPointer.clear();
        throw new Win32Exception(Kernel32.INSTANCE.GetLastError());
    }
    return securityDescriptorMemoryPointer;
}