TTprintPreview and picture transparency

[yannick]

Hello,

I am using TPP and all works very fine.

I have only one problem :

i want to use a TImage with transparency,

But when i use the PaintGraphicEx Method, the transparency doen't work

what is the problem ?

Best regards

[Kambiz]

I'm sorry, but that method doesn't support transparency.

You have to calculate the target rectangle of the image, and draw it using the Canvas.StretchDraw method.

[yannick]

Thank you for your very fast response...

do you plan to implement this in future versions ?

thank you

Yannick

[yannick]

There is a PaintGraphicEx and PaintGraphicEx2 ....

so maybe a PaintGraphicEx3 in next versions ?

[yannick]

Hello

I have try your method ; the picture appear good for bmp with transparency, but in the print there is nothing.

If i put a gif with transprency into, it fill the transparency zone with black....

so it doesnt solve my problem.

Do you know why ?

Thank you

[Kambiz]

Some printer drivers can print only DIB bitmaps.

[yannick]

So what is the solution to print a picture with transparency ?

i am not a specialist like you in this domain, i am not use to manipulate bitmap and all sort of draw methods,


so , do you plan to add this in your component ? i think it will be very usefull for including picture like logos on a grayscaled background....

or can you give me few lines to do it ?

thank you !

yannick

[Kambiz]

Currently I'm too busy with my other stuffs. But for sure I'll remove this limitation in the next release.

[yannick]

thank you very much !!!!

[yannick]

Hello Kambiz

when will you take care of transparents picture in your component ?

best regards

Yannick

[Kambiz]

Yannick,

I really don't know. It's a long time that I couldn't find time to spend on my hobbies.