再学GDI+[97]: TGPImage（17）

再学GDI+[97]: TGPImage（17）2012-05-31 cnblogs 万一获取GDI+所支持的可编码、可解码的图像格式

其实这和 TGPImage 是没有关系的.

本例效果图:

代码文件:

unit Unit1;
interface
uses
 Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
 Dialogs, StdCtrls;
type
 TForm1 = class（TForm）
  Memo1: TMemo;
  procedure FormCreate（Sender: TObject）;
 end;
var
 Form1: TForm1;
implementation
{$R *.dfm}
uses GDIPOBJ, GDIPAPI;
procedure TForm1.FormCreate（Sender: TObject）;
var
 num, size, i: Cardinal;
 ImageCodecInfo: PImageCodecInfo;
Type
 ArrImageCode = array of TImageCodecInfo;
begin
 Memo1.Clear;
 {获取 GDI+ 可以编码的图像格式:}
 GetImageEncodersSize（num, size）;
 GetMem（ImageCodecInfo, size）;
 GetImageEncoders（num, size, ImageCodecInfo）;
 Memo1.Lines.Add（"GDI+ 可以编码的图像格式有:"）;
 for i := 0 to num - 1 do
  Memo1.Lines.Add（ArrImageCode（ImageCodecInfo）[i].MimeType）;
 FreeMem（ImageCodecInfo, size）;
 {获取 GDI+ 可以解码的图像格式:}
 GetImageDecodersSize（num, size）;
 GetMem（ImageCodecInfo, size）;
 GetImageDecoders（num, size, ImageCodecInfo）;
 Memo1.Lines.Add（""）;
 Memo1.Lines.Add（"GDI+ 可以解码码的图像格式有:"）;
 for i := 0 to num - 1 do
  Memo1.Lines.Add（ArrImageCode（ImageCodecInfo）[i].MimeType）;
 FreeMem（ImageCodecInfo, size）;
end;
end.

窗体文件:

object Form1: TForm1
 Left = 0
 Top = 0
 Caption = "Form1"
 ClientHeight = 251
 ClientWidth = 206
 Color = clBtnFace
 Font.Charset = DEFAULT_CHARSET
 Font.Color = clWindowText
 Font.Height = -11
 Font.Name = "Tahoma"
 Font.Style = []
 OldCreateOrder = False
 OnCreate = FormCreate
 PixelsPerInch = 96
 TextHeight = 13
 object Memo1: TMemo
  Left = 0
  Top = 0
  Width = 201
  Height = 251
  Align = alLeft
  Lines.Strings = （
   "Memo1"）
  ScrollBars = ssBoth
  TabOrder = 0
  ExplicitHeight = 239
 end
end