Hello, I am scanning a file for text and pass the MSElementDescr to my function for modification. I have tried a number of methods from the examples file. I can ADD text, but my ability to modify the existing simple text string seems to be lacking something. Is there an element add needed, or am I using the incorrect process for modifying existing text? I am fairly new to programming for Microstation, are there any books explaining how to program for Microstation using Visual Studio 2017 in c++?
Public void getText(MSElementDescr *elm) { ElementHandle eh(elm,false); EditElementHandle eeh(elm, true, true, 0);
TextBlockPtr textBlock = TextHandlerBase::GetFirstTextPartValue(eh); CaretPtr searchStart =textBlock->CreateStartCaret(); CaretPtr searchEnd = textBlock->CreateEndCaret(); ITextQueryCP textQueryHandler = eh.GetITextQuery();
if (!textQueryHandler || !textQueryHandler->IsTextElement(eh)) {return; }
ITextEditP textEdit = eh.GetITextEdit(); ITextPartIdPtr textPart; TextBlockPtr textBlock = textEdit->GetTextPart(eh, *textPart);
if (!textBlock.IsNull() && !textBlock->IsEmpty()) { WString strW = textBlock->ToString(); CaretPtr startCaret = textBlock->CreateStartCaret(); CaretPtr endCaret = textBlock->CreateEndCaret(); WString originalString = textBlock->ToString();
if (0 == originalString.compare(L"TEXT_TO_MATCH"))
{std::wostringstream oss; oss << "this is a test"; textBlock->ReplaceText(oss.str().c_str(), *textBlock->CreateStartCaret(), *textBlock->CreateEndCaret());//CHANGES TEXT IN TEXTBLOCK, BUT NOT IN DESIGN FILE textBlock->PerformLayout();//DESPERATE TEST TO SEE IF IT WOULD UPDATE FILE... BUT NO textEdit->ReplaceTextPart(eeh, *textPart, *textBlock);
//THESE REMAIN FROM MY FAILED TESTS BELOW //ElementRefP erp = eeh.GetElementRef(); //MSElementCP msecp = eeh.GetElementCP(); //eeh.ReplaceInModel(erp); //doesn't work //eeh.ReplaceElement(msecp); doesn't work //textBlock->AppendText(oss.str().c_str());//doesn't work //eeh.AddToModel();//will add element to file, keeps old element this works. }
}
John Schenk said:I am scanning a file for text and pass the MSElementDescr to my function
Here's a MicroStationAPI way to enumerate elements in a model. The enumeration gives you an immutable ElementHandle. If you want to modify it, construct an EditElementHandle from it.
ElementHandle
EditElementHandle
You may want to test the element first, using ITextQuery.IsTextElement (ElementHandleRC el), as you have done in your code above. Look in the IncrementText example to see how to implement that test.
ITextQuery.IsTextElement (ElementHandleRC el)
From the MicroStationAPI help about TextBlock: To create a free-standing text element from a TextBlock, use TextHandlerBase::CreateElement. That creates a new EditElementHandle, which you then add to the DGN model.
TextBlock
Regards, Jon Summers LA Solutions