Edit control modifies the current line of text

[Davider]

resolved!
insert text to the end of the line where the cursor is located

Code:

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int lineStart = SendMessage(h EM_LINEINDEX line 0)
int lineLength = SendMessage(h EM_LINELENGTH line 0)
int lineEnd = lineStart + lineLength

SendMessage(h EM_SETSEL lineStart lineEnd)

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How to take the text insertion point as the coordinate
GetCaretXY