93 lines
2.2 KiB
Batchfile
93 lines
2.2 KiB
Batchfile
@echo off
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setlocal ENABLEDELAYEDEXPANSION
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:: ------------------------------------------------------------
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:: Select ico file via GUI
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:: ------------------------------------------------------------
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for /f "delims=" %%A in ('powershell -command ^
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"Add-Type -AssemblyName System.Windows.Forms | Out-Null; $f=New-Object Windows.Forms.OpenFileDialog; $f.Filter='Icon (*.ico)|*.ico'; if($f.ShowDialog() -eq 'OK'){Write-Output $f.FileName}"') do (
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set ICO=%%A
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)
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if "%ICO%"=="" (
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echo No file selected.
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pause
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exit /b
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)
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echo Checking icon: %ICO%
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echo -----------------------------------------
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:: ------------------------------------------------------------
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:: Extract bytes via PowerShell (safe for PNG-ICON)
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:: ------------------------------------------------------------
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for /f "tokens=* delims=" %%B in ('powershell -command ^
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"[System.IO.File]::ReadAllBytes('%ICO%') -join ' '"') do (
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set RAW=%%B
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)
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:: Convert byte list into array
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set i=0
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for %%b in (%RAW%) do (
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set BYTE[!i!]=%%b
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set /a i+=1
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)
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set /a LEN=i
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:: ICONDIR.Count = bytes 4-5
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set /a COUNT=BYTE[4] + BYTE[5]*256
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echo Total frames: %COUNT%
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echo.
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if %COUNT% LEQ 0 (
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echo ERROR: Invalid icon or no frames.
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pause
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exit /b
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)
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set HAS256=0
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set FIRST256=0
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echo Frame list:
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echo -----------------------------------------
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:: Each ICONDIRENTRY = 16 bytes starting at offset 6
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for /l %%I in (0,1,%COUNT%-1) do (
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set /a OFFSET=6 + 16 * %%I
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set W=!BYTE[%OFFSET%]!
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set H=!BYTE[%OFFSET%+1]!
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if "!W!"=="0" set W=256
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if "!H!"=="0" set H=256
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echo Frame %%I = !W! x !H!
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if "!W!"=="256" if "!H!"=="256" (
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set HAS256=1
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if %%I==0 set FIRST256=1
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)
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)
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echo.
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echo -----------------------------------------
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if %HAS256%==0 (
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echo ERROR: No 256x256 frame found.
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echo This is why NSIS and Windows show a small icon.
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pause
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exit /b
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)
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if %FIRST256%==0 (
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echo WARNING: 256x256 exists but is NOT frame 0.
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echo This causes small icons in NSIS installers.
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echo You should reorder frames so 256x256 is the first frame.
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pause
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exit /b
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)
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echo SUCCESS: 256x256 frame exists AND is the first frame.
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echo Icon is well-structured.
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pause
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exit /b |