Declaration

THistogramBox = class(TCustomControl);

Description

THistogramBox can be attached to a TImageEnProc component from which it gets information to compute and display the color channels histogram.

Demo

Example

// Setup
with HistogramBox1 do
begin
  Background     := clBtnFace;                   // Change background color to a theming color
  GrayColor      := clWindowText;                // Change line color to a theming color
  Font.Color     := clGrayText;                  // Change font and chart color to gray
  MouseInteract  := mhSelectValue;               // Allow selection of a single value
  HistogramKind  := [ hkRed, hkGreen, hkBlue ];  // Histogram to show RGB levels
  HistogramStyle := hsFilledLines;               // Show a filled line graph instead of bars
end;

// Display histogram of colors in current image
HistogramBox1.UpdateFromBitmap( ImageEnView1.IEBitmap );

Methods and Properties

Events

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