Delphix (87) of Delphi and DirectX: tdib. drawtransparent, drawtranslucent, drawalpha ();

Tdib. drawtransparent: transparent according to the specified transparent color;
Tdib. drawtranslucent: transparent Based on the specified transparent color, and then translucent;
DiB. drawalpha: first transparent Based on the specified transparent color, then transparent Based on the specified transparency.
In this example:

Code file:

unit Unit1;interfaceuses  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,  Dialogs, DIB, StdCtrls;type  TForm1 = class(TForm)    DXPaintBox1: TDXPaintBox;    Button1: TButton;    Button2: TButton;    Button3: TButton;    Button4: TButton;    Button5: TButton;    Button6: TButton;    Button7: TButton;    procedure FormCreate(Sender: TObject);    procedure FormDestroy(Sender: TObject);    procedure Button1Click(Sender: TObject);    procedure Button2Click(Sender: TObject);    procedure Button3Click(Sender: TObject);    procedure Button4Click(Sender: TObject);    procedure Button5Click(Sender: TObject);    procedure Button6Click(Sender: TObject);    procedure Button7Click(Sender: TObject);  end;var  Form1: TForm1;implementation{$R *.dfm}var  dib: TDIB;procedure TForm1.FormCreate(Sender: TObject);begin  dib := TDIB.Create;  dib.SetSize(DXPaintBox1.Width, DXPaintBox1.Height, 24);  dib.Fill(0);  dib.Canvas.Brush.Style := bsClear;  dib.Canvas.Font.Color := clRed;  dib.Canvas.Font.Name := 'Tahoma';  dib.Canvas.Font.Size := 32;  dib.Canvas.Font.Style := [fsBold];  dib.Canvas.TextOut(10, 10, 'DelphiX');  Self.Color := clWhite;end;procedure TForm1.FormDestroy(Sender: TObject);begin  dib.Free;end;procedure TForm1.Button1Click(Sender: TObject);begin  DXPaintBox1.DIB.Assign(dib);  DXPaintBox1.Repaint;end;procedure TForm1.Button2Click(Sender: TObject);begin  DXPaintBox1.DIB.Fill(Self.Color);  DXPaintBox1.DIB.DrawTransparent(dib, 0, 0, dib.Width, dib.Height, 0, 0, clBlack);  DXPaintBox1.Repaint;end;procedure TForm1.Button3Click(Sender: TObject);begin  DXPaintBox1.DIB.Fill(Self.Color);  DXPaintBox1.DIB.DrawTransparent(dib, 0, 0, dib.Width, dib.Height, 0, 0, clRed);  DXPaintBox1.Repaint;end;procedure TForm1.Button4Click(Sender: TObject);begin  DXPaintBox1.DIB.Fill(Self.Color);  DXPaintBox1.DIB.DrawTranslucent(dib, 0, 0, dib.Width, dib.Height, 0, 0, clBlack);  DXPaintBox1.Repaint;end;procedure TForm1.Button5Click(Sender: TObject);begin  DXPaintBox1.DIB.Fill(Self.Color);  DXPaintBox1.DIB.DrawTranslucent(dib, 0, 0, dib.Width, dib.Height, 0, 0, clRed);  DXPaintBox1.Repaint;end;procedure TForm1.Button6Click(Sender: TObject);begin  DXPaintBox1.DIB.Fill(Self.Color);  DXPaintBox1.DIB.DrawAlpha(dib, 0, 0, dib.Width, dib.Height, 0, 0, 32, clBlack);  DXPaintBox1.Repaint;end;procedure TForm1.Button7Click(Sender: TObject);begin  DXPaintBox1.DIB.Fill(Self.Color);  DXPaintBox1.DIB.DrawAlpha(dib, 0, 0, dib.Width, dib.Height, 0, 0, 32, clRed);  DXPaintBox1.Repaint;end;end.
 

Form file:

object Form1: TForm1  Left = 0  Top = 0  Caption = 'Form1'  ClientHeight = 185  ClientWidth = 208  Color = clBtnFace  Font.Charset = DEFAULT_CHARSET  Font.Color = clWindowText  Font.Height = -11  Font.Name = 'Tahoma'  Font.Style = []  OldCreateOrder = False  OnCreate = FormCreate  OnDestroy = FormDestroy  PixelsPerInch = 96  TextHeight = 13  object DXPaintBox1: TDXPaintBox    Left = 8    Top = 8    Width = 193    Height = 73    AutoStretch = False    Center = False    KeepAspect = False    Stretch = False    ViewWidth = 0    ViewHeight = 0  end  object Button1: TButton    Left = 8    Top = 92    Width = 67    Height = 87    Caption = 'Button1'    TabOrder = 0    OnClick = Button1Click  end  object Button2: TButton    Left = 81    Top = 92    Width = 58    Height = 25    Caption = 'Button2'    TabOrder = 1    OnClick = Button2Click  end  object Button3: TButton    Left = 145    Top = 92    Width = 57    Height = 25    Caption = 'Button3'    TabOrder = 2    OnClick = Button3Click  end  object Button4: TButton    Left = 81    Top = 123    Width = 58    Height = 25    Caption = 'Button4'    TabOrder = 3    OnClick = Button4Click  end  object Button5: TButton    Left = 145    Top = 123    Width = 57    Height = 25    Caption = 'Button5'    TabOrder = 4    OnClick = Button5Click  end  object Button6: TButton    Left = 81    Top = 154    Width = 58    Height = 25    Caption = 'Button6'    TabOrder = 5    OnClick = Button6Click  end  object Button7: TButton    Left = 145    Top = 154    Width = 55    Height = 25    Caption = 'Button7'    TabOrder = 6    OnClick = Button7Click  endend