Short description
Sort / Purpose: Convert selected TEXT and MTEXT entities to either all upper case or all lower case in a single operation.
• Scope: Operates only on existing TEXT and MTEXT objects that you select in the drawing.
• Goal: Standardize the letter case of annotations quickly for consistent drawing documentation.
Command:
Command name: CASE
How to run: Type CASE in the command line and press Enter.
Description:
• Selection: Prompts the user to select TEXT and MTEXT entities to be modified.
• Case Option: Lets the user choose between converting to Upper or Lower case, with Upper as the default when Enter is pressed.
• Processing: Reads each entity’s text content, converts it, and writes the new value back to the entity.
• System Handling: Temporarily disables command echo and precision settings, restoring them afterward.
• Failure Handling: Warns the user if no valid text entities are detected in the selection.
Helper function: (if any)
Used AutoLISP / AutoCAD built-ins:
• getvar / setvar: Save and restore CMDECHO and LUPREC values.
• ssget / ssname / sslength: Build and iterate through the selection set of text entities.
• entget / entmod: Read and rewrite DXF data of each text entity.
• assoc / subst: Extract and replace group code 1 (text string).
• strcase: Convert existing text to upper or lower case.
• initget / getkword: Provide and enforce the “Upper/Lower” option selection.
• prompt / princ: Display clean messages and terminate silently.
Functionalities:
• Supports TEXT & MTEXT: Works on both object types simultaneously.
• Uppercase Mode: Converts all selected text content to uppercase.
• Lowercase Mode: Converts all selected text content to lowercase.
• Default Behavior: Uppercase is automatically used if no choice is provided.
• Non-Destructive: Only the string content is modified; all other entity properties remain unchanged.
• Environment-Safe: Resets all system variables changed during execution.
Result:
Result: All selected TEXT and MTEXT entities are converted to the chosen case (Upper or Lower) instantly.
• Uniform Formatting: Every selected annotation ends with consistent capitalization across the drawing.
• Non-destructive: Only the text content changes — layer, style, color, rotation, and position remain untouched.
• Clean Execution: System settings are restored automatically, leaving the environment unchanged after the command finishes.
• Immediate Feedback: The text updates visually in the drawing as soon as the command loops through all entities.
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