mediaplay抓图
小弟前段时间曾做过保证要公开该问题的code(vc,bcb,dephi)，刚开始小弟用拷屏的方法可抓下来总是黑呼呼的一片，后来在几位大虾的提示下用vc+directshow实现那该功能。
可这样一来，就必须用directshow来实现播放与初衷不合.从此我就钻进那死胡同，总是想将
directshow与activemove组件，directshow与mediaplay组件结合起来，利用IBasicVideo Interface来达到目标。可读遍那与此相关的directsdk的头文件，都没有找那结合的办法（那位大虾实现那，请指点小弟，小弟先谢那！）。一直苦无进展，市面上有关的书都翻遍那。无用！（可见那些所谓的“高级编程技巧”都是狗屁，难度大一点的问题都回避，全是乱抄，tmd骗子）,有一天小弟重读The IBasicVideo interface supports the video properties of a generic video window. Generally, this is a video renderer that draws video into a window on the display. (msdn),忽然记起在读dephihelp是有一段相似
TPaintBox provides a canvas that applications can use for rendering an image.(dephihelp)遂想用paintbox可能可以，try->success,code如下：
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, MPlayer, ExtCtrls, StdCtrls, Menus;
type
TForm1 = class(TForm)
MainMenu1: TMainMenu;
filw1: TMenuItem;
open1: TMenuItem;
close1: TMenuItem;
Button1: TButton;
OpenDialog1: TOpenDialog;
PaintBox1: TPaintBox;
MediaPlayer1: TMediaPlayer;
procedure FormCreate(Sender: TObject);
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure PaintBox1Paint(Sender: TObject);
procedure open1Click(Sender: TObject);
procedure Button1Click(Sender: TObject);
private
imgbitmap:TBitmap;
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.FormCreate(Sender: TObject);
begin
imgbitmap:=TBitmap.Create;
imgbitmap.Height:=200;
imgbitmap.Width:=200;
imgbitmap.Canvas.Rectangle(0,0,200,200);
end;
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
imgbitmap.Free;
end;
procedure TForm1.PaintBox1Paint(Sender: TObject);
begin
PaintBox1.Canvas.CopyRect(Rect(0,0,200,200),imgbitmap.Canvas,Rect(0,0,200,200));
end;
procedure TForm1.open1Click(Sender: TObject);
begin
if OpenDialog1.Execute then
begin
MediaPlayer1.FileName:=OpenDialog1.FileName;
MediaPlayer1.Open;
MediaPlayer1.Display:=Form1;
MediaPlayer1.DisplayRect:=Rect(10,10,200,200);
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
imgbitmap.Canvas.CopyRect(Rect(0,0,200,200),form1.Canvas,Rect(10,10,200,200));
PaintBox1.Invalidate;
imgbitmap.SaveToFile('d:\\1234567.bmp');
end;
end.
test环境win2000+dephi6.0
article from "鄙视那些转帖不贴明来源的人"
