how to save a view as a file on the disk ?

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2.33/5 (3 votes)

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Hi to all ,
actually i am developing a paint brush type App where i need to do few editing on the image and now I have to save it to the disk . Now how should I proceed ?

Posted 5-Jun-11 23:13pm

iampradeepsharma

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CPallini · Answer 1 · 2011-06-06T00:24:00

Solution 3

If you have the device context of the window (for instance inside the OnPaint handler), namely dc:

C++

CDC dcMem;
CBitmap bmp;
CRect rc;
CImage img;

dcMem.CreateCompatibleDC(&dc);
GetWindowRect(&rc);
bmp.CreateCompatibleBitmap( &dcMem, rc.Width(), rc.Height());
dcMem.SelectObject(&bmp);
dcMem.BitBlt(0,0,rc.Width(), rc.Height(), &dc, 0,0, SRCCOPY);

img.Attach(bmp);
img.Save(_T("MyBitmap.bmp"), Gdiplus::ImageFormatBMP);

Posted 6-Jun-11 0:24am

CPallini

Comments

iampradeepsharma 6-Jun-11 23:35pm

Image is not recognised ... so how to proceed then

CPallini 7-Jun-11 3:47am

What do you mean? Could you elaborate, please (I've made a test, the provided code is working fine on my system)?

Jacky Goyon · Answer 2 · 2011-07-10T11:00:00

Solution 4

hello

try to replace
img.Attach(bmp);
by
img.Attach((HBITMAP)(bmp->GetSafeHandle()));

Jack

Posted 10-Jul-11 11:00am

Jacky Goyon

Joan M · Answer 3 · 2011-06-05T23:33:00

You should continue working... :rolleyes:

Seriously, you should tell us more things... if you are already working on an app like that one you should tell us what you've achieved, where are you stuck...

In order to store images to disk you should be aware of the fact that each image format has its own way to be stored. So first of all you should decide the target format and therefore you should decide which format do you want to use...

After that you will have to control the mouse events, movements and buttons in order to be able to draw...

Then you will be in the need of drawing into the screen and being able to capture the drawing you've made in memory in order to be able to store it to disk (using the right format).

Depending on the editing you will need a lot of maths to proceed... but...

well... tell us more about the project... which problems you have...