How get object value?

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I have a program with which I work through the directive #import. In it I create the new document and for the first page I place TextFrame which is created with parameters by default.
I can set value:

C++

HRESULT hr = CoInitialize(NULL);
_ApplicationPtr myApp("InDesign.Application");

DocumentPtr myDoc = myApp->ActiveDocument;
PagePtr myPage = myDoc->Pages->Item[1L];
TextFramePtr myTextFrame = myPage->TextFrames->Add(); // create frame on Page
TextFramePtr myTextFrame_2 = myPage->TextFrames->Item[2L]; // Get second frame on Page;

myTextFrame have a GeometricBounds method by means of which the frame size changes. In a code below I set the frame size:

C++

double mySize[4] = {12.7, 12.7, 66.7, 83.2};
SAFEARRAY * Bound;
VARIANT Array;
Array.vt =   VT_ARRAY | VT_R8;
Bound = SafeArrayCreateVector(VT_R8, 1, 4); 
for (int i = 0; i < 4; i++)
{
    long index = i + 1;
    SafeArrayPutElement(Bound, &index, &mySize[i]); 
}
Array.parray = Bound; 
myTextFrame->GeometricBounds = Array;

Get TextFrame GeometricBounds:

C++

_variant_t bounds = myTextFrame->GetGeometricBounds();
if ( (VT_ARRAY | VT_VARIANT) == bounds.vt)
{
    SAFEARRAY *safe = bounds.parray;
    // one dimension?
    if ( safe->cDims == 1 &&
        // correct element size?
        safe->cbElements == sizeof (VARIANT) &&
        // exactly four elements?
        (safe->rgsabound[0].cElements - safe->rgsabound[0].lLbound) == 4 )
    {
        VARIANT *values = (VARIANT *)safe->pvData;
        // assuming four variants - each with VT_R8.
        double fetch[4] = {0};
        for (int i = 0; i < 4; i++)
        {
            if (values[i].vt == VT_R8)
            {
                fetch[i] = values[i].dblVal;
            } 
        }
        // now fetch[0:3] has your values.
    }
}
else
    std::cout << "unexpected type." << std::endl;

Now I want to paint frame with one of predefined swatches. I have to give instance of Swatch to frame by FillColor, i.e.

C++

myTextFrame->FillColor = SomeSwatch->Name;

Got the collection:

C++

SwatchesPtr mySwatches = myApp->Swatches;

Got Swatch instance and Swatch Name:

C++

SwatchPtr mySwatch_1 = mySwatches->Item[1L]; 
_variant_t mySwatchName_1 = mySwatch->Name;

Apply swatch to frame:

C++

myTextFrame->FillColor = mySwatchName_1;

When i get second swatch, get error:

C++

double SwatchCount = mySwatches->Count; //get quantity of elements
std::cout << SwatchCount << std::endl; // SwatchCount = 10
SwatchPtr mySwatch_2 = mySwatches->Item[2L];
_variant_t mySwatchName_2 = mySwatch_2->Name;

What’s wrong with my code? why it isn't available from second Swatch to Swatch.Count?

Posted 10-Aug-15 7:14am

Nindzzya

Updated 17-Aug-15 21:37pm

v13

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Comments

Sergey Alexandrovich Kryukov 10-Aug-15 14:10pm

What do you mean by that? This is already a value. The type has some members which also have values. What's the problem?
—SA

Maciej Los 10-Aug-15 15:45pm

Understand, but not notified.
Use "Reply" widget if you wish to notify member about your comment.

Nindzzya 10-Aug-15 15:51pm

thanks)

Maciej Los 10-Aug-15 15:52pm

You're very welcome ;)

[no name] 17-Aug-15 17:06pm

@nindzzya - the Item array is zero based. Item[1] and Item[2] may be how VB sees it but not so for C++. Use Item[0] and Item[1] for two element array.

Nindzzya 18-Aug-15 1:30am

what do you mean?

Nindzzya 18-Aug-15 3:19am

my new question with the description
http://www.codeproject.com/Questions/1019228/Why-the-collection-element-is-available-only-the-f?arn=0

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bling · Accepted Answer · 2015-08-14T13:26:00

GeometricBounds is a variant - which could be pretty much anything.

https://msdn.microsoft.com/en-us/library/windows/desktop/ms221627%28v=vs.85%29.aspx[^]

The safe thing is to get the variant and check for an expected type (like a SAFEARRAY of four doubles).

https://msdn.microsoft.com/en-us/library/windows/desktop/ms221482%28v=vs.85%29.aspx[^]

Read this about SAFEARRAYs.

http://roblocher.com/whitepapers/oletypes.html[^]

C++

TextFramePtr myTextFrame = myPage->TextFrames->Add(); // create frame on Page

_variant_t bounds = myTextFrame->GetGeometricBounds();
if ( (VT_ARRAY | VT_VARIANT) == bounds.vt)
{
    SAFEARRAY *safe = bounds.parray;
    // one dimension?
    if ( safe->cDims == 1 &&
        // correct element size?
        safe->cbElements == sizeof (VARIANT) &&
        // exactly four elements?
        (safe->rgsabound[0].cElements - safe->rgsabound[0].lLbound) == 4 )
    {
        VARIANT *values = (VARIANT *)safe->pvData;
        // assuming four variants - each with VT_R8.
        double fetch[4] = {0};
        for (int i = 0; i < 4; i++)
        {
            if (values[i].vt == VT_R8)
            {
                fetch[i] = values[i].dblVal;
            } 
        }
        // now fetch[0:3] has your values.
    }
}
else
    std::cout << "unexpected type." << std::endl;