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<Bold>Function Syntax: LockAllVp</Bold>
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<Bold>Version: 2 Date: 24.12.2025</Bold>
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<Hyperlink>AI+https://www.cadtutor.net/forum/topic/75876-unlocking-all-viewports-kent-cooper-kent1cooper/</Hyperlink>
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<Bold>Description</Bold><LineBreak/>
This program displays a dialog that lets you <Span Foreground="Red">Lock</Span> or <Span Foreground="Red">Unlock</Span> all Paper Space viewports in the <Span Foreground="DarkRed">selected layouts</Span>, without using fragile ARX command calls from inside DCL callbacks.<LineBreak/>
It is designed to be stable in AutoCAD and Civil 3D by using <Span Foreground="DarkRed">COM properties</Span> to change viewport lock state and by avoiding command-based locking during dialog actions.<LineBreak/>
<Bold>Commands</Bold>
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• <Span Foreground="DarkRed">LOCKALLVP</Span> run the dialog tool.<LineBreak/>
• <Span Foreground="DarkRed">LockAllVp</Span> run the dialog tool (same as above).<LineBreak/>
• <Span Foreground="DarkRed">_LOCKALLVP</Span> run the dialog tool (underscore alias).<LineBreak/>
<Bold>User Workflow</Bold>
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Run <Span Foreground="DarkRed">LOCKALLVP</Span> to open the dialog.<LineBreak/>

Optionally filter layouts using wildcard pattern <Span Foreground="DarkRed">*</Span> and <Span Foreground="DarkRed">?</Span> then click <Span Foreground="DarkRed">Apply</Span> to rebuild the list.<LineBreak/>

Select one or more layouts in the list (multi-select).<LineBreak/>

Click <Span Foreground="Red">Lock</Span> or <Span Foreground="Red">Unlock</Span>
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The list immediately refreshes to show updated status per layout.<LineBreak/>

Use <Span Foreground="DarkRed">Undo</Span> to revert the last Lock or Unlock operation, including multi-level undo frames.<LineBreak/>

Use <Span Foreground="DarkRed">Copy to Clipboard</Span> to copy selected layout names plus their status.<LineBreak/>
<Bold>What the Dialog Shows</Bold>
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• Each list row displays: <Span Foreground="DarkRed">Layout Name</Span> on the left and <Span Foreground="DarkRed">Status</Span> on the right.<LineBreak/>
• Status values: <Span Foreground="DarkRed">Locked</Span>, <Span Foreground="DarkRed">Unlocked</Span>, <Span Foreground="DarkRed">Mixed</Span>, <Span Foreground="DarkRed">NoVP</Span>, <Span Foreground="DarkRed">Model</Span>.<LineBreak/>
• The <Span Foreground="DarkRed">Selected</Span> counter updates based on the current multi-selection.<LineBreak/>
<Bold>Viewport Detection Logic</Bold>
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• The program scans each chosen layout by reading the layout <Span Foreground="DarkRed">Block</Span> contents and collecting entities of type <Span Foreground="DarkRed">AcDbViewport</Span>.<LineBreak/>
• It skips the overall Paper Space viewport when possible by ignoring viewport <Span Foreground="DarkRed">Number = 1</Span> to avoid unintended global effects.<LineBreak/>
• If no valid viewports are found in a layout, the status becomes <Span Foreground="DarkRed">NoVP</Span>.<LineBreak/>
<Bold>Functionalities</Bold>
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• <Span Foreground="DarkRed">Wildcard filtering</Span> of layouts using <Span Foreground="DarkRed">*</Span> and <Span Foreground="DarkRed">?</Span> with an Apply button that rebuilds the visible list.<LineBreak/>
• <Span Foreground="DarkRed">Multi-select layouts</Span> with <Span Foreground="DarkRed">Select All</Span> and <Span Foreground="DarkRed">Select None</Span> controls.<LineBreak/>
• <Span Foreground="Red">Lock</Span> all detected Paper Space viewports in the selected layouts by setting <Span Foreground="DarkRed">DisplayLocked</Span> to true via COM.<LineBreak/>
• <Span Foreground="Red">Unlock</Span> all detected Paper Space viewports in the selected layouts by setting <Span Foreground="DarkRed">DisplayLocked</Span> to false via COM.<LineBreak/>
• <Span Foreground="DarkRed">Live status refresh</Span> after Lock or Unlock so the list updates immediately to Locked, Unlocked, Mixed, or NoVP.<LineBreak/>
• <Span Foreground="DarkRed">Safe Undo</Span> that stores changes as handle plus prior lock state and can revert multiple operations without calling AutoCAD UNDO from DCL.<LineBreak/>
• <Span Foreground="DarkRed">Copy to Clipboard</Span> for selected layouts, copying lines formatted as layout name then status (tab-separated), one per line.<LineBreak/>
• Optional <Span Foreground="DarkRed">Include Model</Span> toggle to show Model in the list, but Model is not modified and is displayed as <Span Foreground="DarkRed">Model</Span> status.<LineBreak/>
<Bold>Important Technical Notes</Bold>
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• The tool intentionally avoids calling command-based viewport locking from DCL callbacks to reduce the risk of <Span Foreground="Red">ARX hard crashes</Span> and stack errors.<LineBreak/>
• Lock and Unlock operations use COM property writes on <Span Foreground="DarkRed">AcDbViewport</Span> objects, which is typically more stable during UI interaction.<LineBreak/>
• Undo is implemented as an internal stack of changes rather than using AutoCAD command undo inside the dialog callbacks.<LineBreak/>
<Bold>Result</Bold>
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After running the tool, the selected layouts will have their Paper Space viewports set to <Span Foreground="Red">Locked</Span> or <Span Foreground="Red">Unlocked</Span>
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