From a QCAD user:
The vertical / horizontal line tools do not create any lines.
Horizontal / vertical line tool does not create line
Moderator: andrew
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Always indicate your operating system and QCAD version.
Attach drawing files and screenshots.
Post one question per topic.
Horizontal / vertical line tool does not create line
Re: Horizontal / vertical line tool does not create line
Please check if the line length in options toolbar is set to the desired length. If the length field is empty or contains a small value, a zero length line or a very short line might be created.