[NOT RESOLVED YET] Can anyone please explain SetDIBits/SetDIBitsToDevice?

[Drazzakia]

I've searched the whole internet and all i find is advanced functions which i can't break down to understand.

May i please ask anyone to give a brief explanation, and a most BASIC use.
(the 'target use' i am trying to achieve is to use it like SetPixel, 'OR' to change an image rgb)
I hear these API calls are much much faster.

Cheers ~

[dglienna]

Google is even better at Allapi.net!

http://www.mentalis.org/apilist/GetDeviceCaps.shtml


It took a little while, but I found it!

[Drazzakia]

Google is even better at Allapi.net!

http://www.mentalis.org/apilist/GetDeviceCaps.shtml


It took a little while, but I found it!

Thank you but allapi.net was one of the first site i checked, and it didn't help :S

[Jacob Roman]

Try this program I wrote. It's even faster than SetDIBits. It's called Direct Memory Addressing. Very advanced yet very fast pixel writing. It uses DirectX:

http://www.planet-source-code.com/vb...55262&lngWId=1

[Drazzakia]

Try this program I wrote. It's even faster than SetDIBits. It's called Direct Memory Addressing. Very advanced yet very fast pixel writing. It uses DirectX:

http://www.planet-source-code.com/vb...55262&lngWId=1

I don't have the directx sdk installed
Thanks but doesn't help.

[Jacob Roman]

You don't need any SDK.

Odds are DirectX came with your OS or you installed a game that had it.

[Drazzakia]

It still doesn't help.
All i wanted was some one to explain SetDIBitsToDevice

Besides your '300k' app doesn't work when i compile it

[Drazzakia]

Actually the fast scanlines engine works, the others don't.

OBJECT DOESN'T SUPPORT THIS ACTION:
Direct_Draw.SetDisplayMode Width, Height, Color_Bit, 0, DDSDM_DEFAULT


Not that i'm interested in using dir.x in my non game programs

[Jacob Roman]

You don't have the screen resolution then in your video card. Change it to 640 for width and 480 for height. Now it shoud work

[Drazzakia]

@ Jacob: At least i've learned something from this thread, although not what was intentded.

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May i please ask anyone to give a brief explanation, and a most BASIC use of SetDIBitsToDevice.
(the 'target use' i am trying to achieve is to use it like SetPixel, 'OR' to change an image rgb)

Cheers ~

[Jacob Roman]

That Direct Memory Addressing stuff is nothing compared to what DirectX can really do.

[Drazzakia]

@ Jacob: I know that its more powerfull :P, its just not suitable

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Surly some one knows about SetDIBitsToDevice. There are many advanced programs out there which use it.

[Jacob Roman]

Like what do you mean? What are you trying to accomplish?

[dglienna]

Found better info:

The SetDIBitsToDevice function sets the pixels in the specified rectangle on the device that is associated with the destination device context using color data from a device-independent bitmap (DIB).

http://www.mentalis.org/apilist/SetDIBitsToDevice.shtml

There is an example on the page.

[Jacob Roman]

That's the problem. It is dependent on a bitmap in order to plot the pixels. It's best to blit the whole picture instantly using BitBlt, although DirectX is way faster and uses the videocard.

[Drazzakia]

Thanks but i saw this DIB example before posting, its got 10 api calls, and its not well commented in the slightest, infact there is only one comment (the copyright stuff) lol

[dglienna]

But, if you look up each API you will see different examples. Basically, you are moving a picture from one device to another. Like a camcorder's small screen to the tv screen, I would imagine. Then to a printer. A lot of things are automatic in VB. API is quicker, but more complicated.
What do you want to do, exactly?

[Jacob Roman]

Yeah you never answered my question. We are wondering what exactly are you trying to accomplish?

[Drazzakia]

I've searched the whole internet and all i find is advanced
(the 'target use' i am trying to achieve is to use it like SetPixel, 'OR' to change an image rgb)
I hear these API calls are much much faster.
Cheers ~

I'm trying to achive: some one to explain the methods of SetDIBits/SetDIBitsToDevice

[Drazzakia]

lol, jacob we registered on the same month of the same year

[Jacob Roman]

SetDIBits does it by scanlines, while SetDIBitsToDevice does it by the pixel.

[Drazzakia]

Ok, i'll explain better:

I want to set vaules to an array and draw to some picturebox in one go, like a double buffer.

I can't understand the way this api uses headers ect. - and how to use them

[Jacob Roman]

That's what the BitBlt API and DirectX is for

Does it in one go, while the SetDIBit API's needs many gos.

[Drazzakia]

Declare Function BitBlt Lib "gdi32" (ByVal hDestDC As Long, ByVal X As Long, ByVal Y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hSrcDC As Long, ByVal xSrc As Long, ByVal ySrc As Long, ByVal dwRop As Long) As Integer

You can use an array of pixels aswell as a DC for hSrcDC?
Please show me how.

This could be the very fast replacment for setpixel i'm looking for (other than dir.x)