如何获取工程图草图是否正在编辑？(Autodesk Inventor C++ API)

Question

我需要在Inventor中添加工程图草图并对其进行编辑。但是，如果另一个草图已经在编辑中，我的程序将终止，甚至try/catch也不起作用。我找不到草图的属性，显示它是否正在编辑。我的主要代码部分如下：

// All of these three functions pass try/catch perfectly. Program never terminates
Inventor::Application^ App = (Inventor::Application^)Marshal::GetActiveObject("Inventor.Application");
DrawingDocument^ Doc = (DrawingDocument^)App->ActiveDocument;
Sheet^ Sh = Doc->ActiveSheet;

DrawingSketch^ Sk;

try
{
    Sh->Sketches->Add();
    Sk = Sh->Sketches[Sh->Sketches->Count];
    Sk->Edit(); // Crushes the program completely if another sketch is being edited
}
catch (...)
{
    return;
}

我试着循环浏览所有的草图，并将它们全部关闭。这是一种我无法理解的行为方式。

try
{
    // Note: in Inventor indexes definitely start from 1
    for (int i = 1; i <= Sh->Sketches->Count; i++)
    {
        Sk = Sh->Sketches[i];
        Sk->ExitEdit();
    }
}
catch (...)
{
    return;
}

例如，当草图2打开时，尝试关闭草图1的第一个循环(i = 1)以某种方式关闭草图2。现在不能关闭草图2的第二次迭代(i = 2)调用'catch‘并进一步调用'return’。

Answer 1

我对C++不是很熟悉，但下面是如何检测草图是否处于编辑模式的示例

Dim oDrawing As DrawingDocument
Set oDrawing = ThisApplication.ActiveDocument

Dim oSheet As Sheet
Set oSheet = oDrawing.ActiveSheet

Dim editedObject As Variant
Set editedObject = ThisApplication.ActiveEditObject

If editedObject.Type = ObjectTypeEnum.kDrawingSketchObject Then
    Dim activeEditSketch As DrawingSketch
    Set activeEditSketch = editedObject
    activeEditSketch.ExitEdit
End If

Dim oSketch As DrawingSketch
Set oSketch = oSheet.Sketches.Add()

我希望你能把这段代码转换成C++