majiayu000 Screenshot Capture
Capture screenshots using PowerShell with support for cross-virtual-desktop window capture.
Output Location
Screenshots saved to .screenshots/ at repo root (in .gitignore).
Important: Resize Large Captures
When capturing screenshots to read/analyze, always use -MaxWidth 1920 or smaller to keep file size manageable. Large screenshots (e.g., 3440x1440) should be scaled down for efficient processing.
Quick Reference
| User Says | Command | What Happens |
|---|---|---|
| "POE2 window" | -WindowTitle "Path of Exile" |
Captures window content directly via PrintWindow (works across VD) |
| "POE2 monitor" | -WindowTitle "Path of Exile" -CaptureMonitor |
Switches to POE2's VD, captures full monitor, switches back |
| "monitor 0" | -Monitor 0 |
Captures primary monitor (current desktop) |
Three Use Cases
1. Capture Monitor
.\.claude\skills\screenshot-capture\scripts\capture_screenshot.ps1 -Monitor 0
2. "POE2 window" - Capture Window Content
Captures window content directly using PrintWindow API. Works across virtual desktops without switching.
.\.claude\skills\screenshot-capture\scripts\capture_screenshot.ps1 -WindowTitle "Path of Exile" -OutputName "poe2_window" -MaxWidth 1920
3. "POE2 monitor" - Capture Window's Monitor
Switches to window's virtual desktop, captures the full monitor, switches back.
.\.claude\skills\screenshot-capture\scripts\capture_screenshot.ps1 -WindowTitle "Path of Exile" -CaptureMonitor -OutputName "poe2_monitor" -MaxWidth 1920
Capture Parameters
| Parameter | Description |
|---|---|
-WindowTitle |
Partial window title to match |
-Monitor |
Monitor index (0 = primary) |
-CaptureMonitor |
Capture full monitor of window (with VD switching) |
-OutputName |
Custom filename (without extension) |
-MaxWidth |
Scale down if wider |
-MaxHeight |
Scale down if taller |
-NoSwitchBack |
Stay on target VD after capture |
Annotation Features
Add Grid with Percentage Markers
# "add grid to poe2_window.png"
.\.claude\skills\screenshot-capture\scripts\annotate_screenshot.ps1 -InputPath "poe2_window.png" -AddGrid
Draw Rectangle at Percentage Coordinates
# "draw rectangle from 45,35 to 75,65 on poe2.png"
.\.claude\skills\screenshot-capture\scripts\annotate_screenshot.ps1 -InputPath "poe2.png" -DrawRect "45,35,75,65"
Combined Grid + Rectangle
.\.claude\skills\screenshot-capture\scripts\annotate_screenshot.ps1 -InputPath "poe2.png" -AddGrid -DrawRect "45,35,75,65"
Annotation Parameters
| Parameter | Description |
|---|---|
-InputPath |
Input image (filename if in .screenshots/) |
-OutputPath |
Output path (default: adds _annotated suffix) |
-AddGrid |
Add 10% gridlines with markers |
-DrawRect |
Rectangle(s) as "X1,Y1,X2,Y2" percentages |
-GridColor |
Grid color (default: Yellow) |
-RectColor |
Rectangle color (default: Red) |
List Windows
.\.claude\skills\screenshot-capture\scripts\list_windows.ps1
Shows all windows with virtual desktop status (Current/Other).