Re: How to replace picture in richviewedit

Author

Message

Jean Jacques Serpoul

Posted: 09/28/2004 21:42:09

Thanks, it's working

Jean Jacques Serpoul

"Sergey Tkachenko" <svt@trichview.com> a écrit dans le message de news:

41594a77$1@support.torry.net...

> 1) trichview.BackgroundBitmap

> bmp := TBitmap.Create;

> bmp.LoadFromFile(...);

> rv.BackgroundBitmap := bmp; // image is copied here

> bmp.Free; // you still need to free the original image

> 2) cell.BackgroundImage

> bmp := TBitmap.Create;

> bmp.LoadFromFile(...);

> cell.BackgroundImage := bmp; // image is copied here

> bmp.Free; // you still need to free the original image

> The same is for table.BackgroundImage.

> Unlike trichview.BackgroundBitmap, you can assign not only bitmaps, but

> any

> graphic type for these properties

> 3) For items - image is not copied but owned by TRichView.

> You can use RVData.SetPictureInfo to change it, where RVData may be

> trichview.RVData is the item is not in table, or cell.GetRVData, if the

> item

> is in a table cell.

> bmp := TBitmap.Create;

> bmp.LoadFromFile(...);

> RVData.SetPictureInfo(... bmp ...);

> // do not free bmp!

> What to do if you want to load graphics from file, do not know file

> format,

> but want to load it anyway if it's supported by Delphi.

> var pic: TPicture;

> gr: TGraphic;

> pic.LoadFromFile(...); // TPicture can detect file format

> gr := RV_CreateGraphics(TGraphicClass(pic.Graphic.ClassType)); // from

> RVFuncs unit

> gr.Assign(pic.Graphic);

> Now use gr as bmp in the examples 2-3 above.

> The examples above assume that you do not want to make these operations

> undoable.

>> Hello,

>> I want to replace programmatically pictures in a richview document using

>> BackgroundImage, Cell.BackgroundImage or Cell.GetPictureInfo ==> I get a

>> Tgraphic object.

>> How to change it (Loading from a file for example) and replace it in the

>> richview document.

>> Thanks in advance

>> Jean Jacques Serpoul