将image组件的图片保存为JPG格式图片方法
procedure SaveAsJPG ;
var
jp: TJPEGImage; //Requires the "jpeg" unit added to "uses" clause.
begin
jp := TJPEGImage.Create;
try
with jp do
begin
jp.CompressionQuality := 2;
jp.Compress ;
Assign(Image1.Picture.Bitmap);
SaveToFile('D:\zhy.jpg');
end;
finally
jp.Free;
end;
////---读入方法如下:
procedure OpenJPGInImage
var
jp: TJPEGImage; //Requires the "jpeg" unit added to "uses" clause.
begin
jp := TJPEGImage.Create;
jp.LoadFromFile('D:\zhy.jpg');
try
with jp do
begin
image1.Picture.Bitmap.Assign(jp);
end;
finally
jp.Free;
end;
end;