为什么集合元素只有第一个？ [英] Why the collection element is available only the first?

问题描述

我有一个程序，通过它指令#import。在其中我创建了新文档，在第一页中我放置了默认使用参数创建的TextFrame。

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.

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

现在我想用一个预定义的样本绘制框架。我必须通过FillColor将Swatch的实例赋予帧，即

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

myTextFrame->FillColor = SomeSwatch->Name;

得到了收集：

Got the collection:

SwatchesPtr mySwatches = myApp->Swatches;

获得Swatch实例和Swatch名称：

Got Swatch instance and Swatch Name:

double SwatchCount = mySwatches->Count; //get quantity of elements
std::cout << SwatchCount << std::endl; // SwatchCount = 10
SwatchPtr mySwatch_1 = mySwatches->Item[1L];
_variant_t mySwatchName_1 = mySwatch->Name;

但这里第二个元素不可用：

but here the second element isn't available:

SwatchPtr mySwatch_1 = mySwatches->Item[2L]; // m_pInterface = 0x00000000

如何获得所有元素？

How get all elements?

推荐答案

docs [< a href =http://jongware.mit.edu/idcs6js/pc_Swatches.htmltarget =_ blanktitle =New Window> ^ ]令人困惑



count似乎是指swatch中的元素，length似乎是指数组中的样本数

the docs[^] are perplexing

count would appear to refer to elements in the swatch, length would appear to refer to number of swatches in the array

，因为第一个COM不是c ++！ COM没有重载运算符。唯一的功能是ptr-> Item（索引）。通常对于模板智能指针，元素调用返回接口指针，即itemptr = ptr-> Item和你的ptr-> Item [1]将传递itemptr + 1指针增量而不是itemptr-> Item（1）显式调用返回对象。

问候。

for the first COM is not c++! There are no overloaded operators for COM. The only function to that is the ptr->Item(index). Usually for template smart pointers the element calls return Interface pointers i.e. itemptr = ptr->Item and your ptr->Item[1] will deliver itemptr+1 pointer increment not itemptr->Item(1) explicit call on the returned object.
regards.

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