C / C++ / MFC

14-Jun-07 19:44

Do you want to change icon of your program

WhiteSky

Save Screenshot

CDRAIN14-Jun-07 4:54

14-Jun-07 4:54

Hi, I'm developing a Visual C++ App.
I need to save my app's screenshot and save it as an image (to analize it in future).
Can somebody help me to do this on a Button's click event?

Thanks a lot

David Crow14-Jun-07 5:40

14-Jun-07 5:40

CDRAIN wrote:
I need to save my app's screenshot...

To where?

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Naveen14-Jun-07 14:30

Naveen

14-Jun-07 14:30

You can save your app's screen as a bmp file. there are many samples in code project desribing this. Have a search. How ever i will explain the steps.

Get the device context of your window.
Create a memory dc and a bitmap.
bitblt the content of the screen to the memory dc
now get the pixel data and other informarion from this bimap object and write to a file.

nave

[OpenedFileFinder]

Hamid_RT14-Jun-07 19:41

Re: Save Screenshot [modified]

14-Jun-07 19:41

Do you have any handle of this screenshot (hbitmap)?

WhiteSky

CDRAIN15-Jun-07 0:46

15-Jun-07 0:46

I need to save the screenshot in a file .bmp or jpg (better) and the post it via email.
I don't have implement nothing code yet, have you sample code?

How I've just said I need to post it in email message (compiled with the TO: address), is there an API function (like the HTML "mailto:mymail@my.com" or some simple command) to open the user's email App with this message ready to me sent?

Thanks.

-- modified at 6:53 Friday 15th June, 2007

Hamid_RT15-Jun-07 2:56

15-Jun-07 2:56

Yeah I had and I think its easy for you,you can send a message with attachment for send message with attachment you can use of IMAPI(I think you can find an example on the codeproject.
for make a file simplest code is like this (but you didnt tell me do you have a handle (hbitmap) or no)

CImage m_Image;
m_Image.Attach(hbitmap);
m_Image.Save(filename,file type but if you dont set this parameter I think it makes a bitmap);
//but you can save your file with png,jpg,...
m_Image.Detach();

this code is simplest code that you can make your file.

Does this information helpful and does your problem solve or no.

WhiteSky

CDRAIN15-Jun-07 3:28

15-Jun-07 3:28

I don't have hbitmap I need to capture the screen, and than save the image with the code you post (thanks for this).
- I need to know how to capture the screen bitmap?
- Can you easilly post me code or an example of the IMAPI's use (or when I can I'll search an examle)..

Thaks of all.

Hamid_RT15-Jun-07 5:29

15-Jun-07 5:29

You must wait till I find my code and then send for you. Smile | :)

WhiteSky

Hamid_RT15-Jun-07 6:06

15-Jun-07 6:06

HDC m_hdcMem,hdc;
HBITMAP m_Bitmap,m_OldBitmap,hMainBmp ;
//one intersting for you if you want to use of other resulition
you can simply change 800x600(640x480/1024x768,...)
int x=800;
int y=600;

//use of GetDC()->m_hDC and see result.
//hdc=GetDC()->m_hDC;
hdc=GetDesktopWindow()->GetDC()->m_hDC;

m_hdcMem= CreateCompatibleDC(hdc);

//one interesting for you if you want to use of other 	
m_Bitmap = CreateCompatibleBitmap(hdc,x,y);
 m_OldBitmap=(HBITMAP) SelectObject(m_hdcMem, m_Bitmap);

  BitBlt(m_hdcMem, 0,0,x,y, hdc,0,0,SRCCOPY);
 hMainBmp =(HBITMAP) SelectObject(m_hdcMem, m_OldBitmap);
///////////Now you have a hbitmap of screen hMainBmp/////

CImage m_Image;
m_Image.Attach(hMainBmp);
m_Image.Save("c:\\test.bmp");//use of jpg instead bmp but if you can zip your file its good.
m_Image.Detach();
DeleteDC(m_hdcMem);
DeleteObject(hMainBmp );
DeleteObject(m_OldBitmap);

for second part I could'nt find my program but I found a good article for you Another simple MAPI class[^]

WhiteSky

CDRAIN16-Jun-07 2:25

16-Jun-07 2:25

Thanks al lot for the help, now I'm able to save and send screenshot vie email.
With the sample you send me I'm able to send email directly in "background", but how can I obtain an editable and pre-compiled mail on my email's Manager (Outlook Express) so that I can add text or modify something before send it?

Thanks.

Hamid_RT16-Jun-07 9:07

16-Jun-07 9:07

I think you can find exmaples about outlook express but I'm not sure I saw on the Codeproject or other sites(I saw many years ago) on that article user able to fill fields on the outlook,but why you dont use of your program I dont know aout your program is that a project or homework but for example you can insert two options to your program on the first option user use of a file that this file made previous with program,on other choise you show a dialog to user and he can selects detaily for send (To,Bc,BCC,attachment) and for detaily of image(size of image(100x100,...),type of image(bmp,...) and advanced option on the BitBlt(0(or insert different x),0(or insert different y),x,y,..).

WhiteSky

CDRAIN16-Jun-07 23:56

16-Jun-07 23:56

My programm is a project, an "analisy and reporter project", and I want to fit it with the MS Office's standards, so I must have a preview of the mail to send with the document attached (or empty if so).
However I accept your suggest and I can try to perform this (initially) but then I like to obtain what I search.

Thanks a lot for Help, it's very usefull.
Bye

Hamid_RT17-Jun-07 7:49

17-Jun-07 7:49

Some time ago I saw a question on this forum bout preview of print well it seems to you do you wan to make your print preview or use of a activex (I personal dont want to tell you use of activex I like that you make your class and use of it its better for preview an article is on the www.codresource.net (Im not sure spell of this address is correct or no) except this site on the codeproject you can see a lot of articles that they show steps for write preview).Your answer doesnt have an answer "MS Office's standards" I think you want to write a package that conform with office well I think you are lucky I think if you search on the codeproject you can find your answer and more thing that I like to tell you always check variables and return value and generaly all things for example you get a screenshot but hbitmap is null so if you pass this variable to CImage you will get an exception or other example you run your program of CD so you cant save your file on the CD.
I hope this informations helpful for you.

WhiteSky

CDRAIN21-Jun-07 21:33

21-Jun-07 21:33

Hi, I solve my problem with your help. Big Grin | :-D

Thanks a lot.
Bye

Hamid_RT22-Jun-07 1:48

transferring control between 2 programs?

22-Jun-07 1:48

I tried to told a good answer to you but maybe I was lucky that I saw your question!;)

WhiteSky

IlanTal14-Jun-07 4:19

14-Jun-07 4:19

In my application I have a button to start another application (a different program altogether). I use the old WinExec which works fine. The problem is that I don't want multiple instances of the other application. (For example the user clicks on the first application and again it gets control and then he clicks on the button again.)

What I would like to do is transfer control to that program if it is running and not start and new instance of it. (This would be the equivalent of clicking on its icon on the bar on the bottom of the screen.) Is there a way to do such a thing?

Thanks,
Ilan

led mike14-Jun-07 4:26

led mike

14-Jun-07 4:26

IlanTal wrote:
Is there a way to do such a thing?

There are many ways. See Inter-process communication[^]

IlanTal14-Jun-07 8:10

14-Jun-07 8:10

I don't want to send any information between the programs, just give the second program control - like you do when you click on the task bar.

David Crow14-Jun-07 4:46

14-Jun-07 4:46

If you have access to the other application's source code, see here.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

IlanTal14-Jun-07 8:13

14-Jun-07 8:13

Today in the second program I use a mutex to detect the second instance and kill it.
The reply below this one is correct in the sense that I want to give it focus.
However I don't know what it means to give focus to a totally different process.

David Crow14-Jun-07 8:41

14-Jun-07 8:41

IlanTal wrote:
However I don't know what it means to give focus to a totally different process.

The one and only instance of your "second program" does this with a call to SetForegroundWindow().

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

IlanTal14-Jun-07 23:47

14-Jun-07 23:47

Thank you very much. That is my missing link.

DjinnKahn14-Jun-07 5:03

DjinnKahn

14-Jun-07 5:03

maybe:

Use ::FindWindow() to check if the other program is running, and get the window handle if it is.

Use something like ::SetFocus() or ::SetForegroundWindow() to give the other program control (now that you have its window handle).

David Crow14-Jun-07 5:39