QTextEdit as html templating engine

[YuriQ]

Hello.
First - sorry for my English, hope you will understand me :)
I need to implement a simple templating engine based on QTextEdit. It must work like this:
Step 1) Load template into QTextEdit
Step 2) Find every macros (like "{text}"), replace all of them with some text containers (frames or text blocks or something else)
Step 3) Use text containers from step 2 to quickly insert/modify text in areas where were macroses
For step 2 I choose QTextFrame. So please take a look at the code:
@
// pTextEdit is pointer to my QTextEdit instance
QString sTemplate = "<table border='1'><tr><td>{text}</td></tr></table>";
pTextEdit->setHtml(sTemplate);
if (pTextEdit->find("{text}"))
{
QTextFrameFormat FrameMft;
FrameMft.setBackground( QBrush(Qt::yellow) );
FrameMft.setBorder(0.0);
FrameMft.setBorderStyle(QTextFrameFormat::BorderStyle_None);
FrameMft.setMargin(0);
FrameMft.setPadding(0);

auto Cursor = pTextEdit->textCursor();
Cursor.removeSelectedText();
auto* pFrame = Cursor.insertFrame( FrameMft );

auto FrameCursor = pFrame->firstCursorPosition();
FrameCursor.insertText("Hello QTextFrame");
}
@

For some reason QTextEdit adds two empty lines around QTextFrame - one before and one after. Please help me to find a way to insert text frames without empty lines or suggest something to achieve my goal without text frames (and without external libraries).

Qt version = 5.1

[YuriQ]

I found that QTextBlock works almost as good as I want.
Algorithm:

1. Find macro
2. Remove selected text
3. Remember current block
4. Use block from step 3

[rst256]

bq. For some reason QTextEdit adds two empty lines around QTextFrame – one before and one after.bq.
Manual don't read?
Each frame contains at least one text block to enable text cursors to insert new document elements within.

[SGaist]

Since you want to use templates why not make use of something like "plustache":https://github.com/mrtazz/plustache ? Could make things easier

[rst256]

actually of a standard text editor and beckon to use it for other purposes.
if it is finalized api custom format to turn a very serious engine for templates ranging from documents to source.