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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