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ew8bakandClaude Sonnet 4.6
3bfd9adf0d
SpectrumView: rewrite DrawSpectrumGradient to blend directly into FSpectrumBitmap via ScanLine instead of TLazIntfImage+BitBlt (stale DC on win32). Add alpha=$FF fixup pass so pf32bit Canvas.Draw renders via StretchBlt not AlphaBlend. Remove FSpecGradImg/FSpecGradBmp fields. MainForm: mask exZeroDivide/exInvalidOp in FormCreate so WDSP DLL divide-by-zero does not crash the DSP thread on win32 (Qt6 already masks FPU exceptions globally). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>