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Date Posted: 17:59:28 02/22/01 Thu
Author: Michel
Subject: Re: TImageScrollBox to bitmap?
In reply to: Hans 's message, "Re: TImageScrollBox to bitmap?" on 13:45:43 02/22/01 Thu


Hi Hans,

If you don't know the format in advance, the easiest way will be to use a TImage; but it does not need to be displayed. Just created programmatically (don't drop it on a form), then use, Image->LoadFromFile(...).

Then to convert to a TBitmap, you create a TBitmap programmatically, and copy to it using:

Bitmap->Width = Image->Picture->Graphic.Width;
Bitmap->Height = Image->Picture->Graphic.Height;

Bitmap->Canvas->Draw( Image->Picture->Graphic, 0, 0 );

I'll will add to my todo list a LoadFileToBitmap and LoadStreamToBitmap.

Best regards,

Michel


>Hi Michel,
>
>>TImage alltogether by using a TBitmapGraphic. But
>>remember that VCL (Delphi) classes must be
>>instanciated with a New call:
>>
>>TBitmapGraphic *BitmapGraphic = new(TBitmapGraphic);
>>BitmapGraphic->LoadFromFile(...);
>
>This was very helpfull Michel, thanks. But this can
>only load a bitmap. I want to be able to load ALL
>formats supported, and copy them to a bitmap. Is this
>possible without using either TImage or a whole range
>of load instructions as above?
>Also, if I use the special TBitmapGraphic, how can I
>get its contents to a normal TBitmap that I can use
>with all other functions.
>In short, for C++Builder, what is the equivalent of:
>
>LoadAnyEnvisionFormat(ToBitmap, FileName);
>
>I guess a lot of potential clients would like to know
>this so you really should add this to your FAQ.
>
>Thanks,
>
>Hans

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