Java Development

[eDip]

Hi,

I want to know how the raster operation in Graphics class works. I have read the documentation but able to get very little from it.

How 'rop' and 'tilerop' function works? What is meaning and purpose of ROP_SRC_COPY?

I am using Blackberry JDE 4.1. 

[eDip]

Hi Mark,

Do you have any insights regarding this?

Regards,

eDip 

[MSohm]

The only documentation for these methods is within the JavaDocs.  If you can provide a description of what you are trying to accomplish I may be able to offer some suggestions.

[eDip]

Hi Mark,

I want to copy area from screen to a bitmap and pass this bitmap to bitmap field of another screen. I am trying to use 'rop' function with ROP_SRC_COPY which says "Raster operation constant for normal bitmap copy.".

Also while using 'rop(int rop, int x, int y, int width, int height, Bitmap source, int left, int top) ' method on graphics object, which is destination region and which is source bitmap?

Regards,

eDip 

[MSohm]

You can use the Display.screenshot method to capture all or part of the current screen, which is then stored in a Bitmap object.

[eDip]

Thanks Mark!

I have not logged in for few days so not been able to reply.

Display.screenShot method is available from version 4.3. How to make this possible in earlier versions?

Regards,

eDip 

[MSohm]

This feature is not supported in earlier versions.  There isn't an alternative method in earlier versions of the BlackBerry API set.

[eDip]

Thanks Mark!

Regards,

Dipak