Re: Any other alternative for GetPixel() SetPixel() - C / C++ / MFC Discussion Boards

Re: load image in c++

rempit5-Jul-07 15:20

rempit

5-Jul-07 15:20

just win32 API console application..

Re: load image in c++

David Crow5-Jul-07 16:31

David Crow

5-Jul-07 16:31

Console applications cannot display GUI images.

"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

Re: load image in c++

rempit5-Jul-07 23:08

rempit

5-Jul-07 23:08

so i have to use win32 app or mfc?
it is still using c++ programming?
or the different is just the Project?

Re: load image in c++

David Crow6-Jul-07 2:43

David Crow

6-Jul-07 2:43

You can develop a console application using Win32, MFC, or both. You can also develop a GUI application using Win32, MFC, or both.

"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

How to send email programatically with attachment

BlrBoy4-Jul-07 20:39

BlrBoy

4-Jul-07 20:39

Hello All

I want to programatically send email to my ID (Yahoo or gmail) with an attachment. I am very new to email programming. Can any one suggest where to start with?

Thanks for your time
BlrBoy

Re: How to send email programatically with attachment

Hamid_RT4-Jul-07 21:28

Hamid_RT

4-Jul-07 21:28

See Programmatically adding attachments to emails[^] and Sending Email using MAPI - A COM DLL[^]

WhiteSky

Any other alternative for GetPixel() SetPixel()

narayanagvs4-Jul-07 20:36

narayanagvs

4-Jul-07 20:36

Hi All,

I use dc.GetPixel() dc.SetPixel() functions to render bitmaps with my color and then StretchBlt on to my Paint dc.I do StretchBlt of around 16 bitmaps on Paint DC.As a result my painting is delayed by 3 secs.
So, Is there any otherway other than GetPixel() and SetPixel() to reduce the delay?

Thanks in Advance

Today is a gift, that's why it is called the present.

Re: Any other alternative for GetPixel() SetPixel()

Vadim Tabakman4-Jul-07 21:01

Vadim Tabakman

4-Jul-07 21:01

A replacement to GetPixel, is to use GetBitmapBits and access the memory directly.

<br />
BITMAP bm= ###; // i assume you have this<br />
<br />
int datasize = bm.bmWidth*bm.bmHeight*bm.bmPlanes;<br />
COLORREF* lpClrData = (COLORREF*)LocalAlloc(LPTR, datasize * sizeof(COLORREF));<br />
DWORD ds = GetBitmapBits(hBitmap, datasize * sizeof(COLORREF), lpClrData);<br />
<br />
COLORREF pixelColor = lpClrData[y*imageWidth+x];<br />
<br />

This is much faster that GetPixel...
I haven't had to deal with SetPixel (but i'm sure with the above you should be on your way to finding a solution).

Cheers,
Jubjub

"If you're too careful, your whole life can become a f---in' grind." - Mike McD (Rounders)

Re: Any other alternative for GetPixel() SetPixel()

Russell^'5-Jul-07 5:38

Russell^'

5-Jul-07 5:38

Jubjub,
is this work with any color resolution?I remember that I try something similar in past,...and I remember that I fonund many problem if the system was 16k colors, where 2 Bytes are used to define the pixel color. Confused | :confused:

Russell

Re: Any other alternative for GetPixel() SetPixel()

Mark Salsbery5-Jul-07 8:29

Mark Salsbery

5-Jul-07 8:29

narayanagvs wrote:
to render bitmaps with my color

What do you mean by this? What are you actually doing with the pixel values?
This would determine how best to efficiently access the pixels IMO.

If you need pixel access then I would recommend using a DIB section, which gives you an HBITMAP
for GDI operations along with a pointer to the pixel bits for direct manipulation.

Mark

Mark Salsbery
Microsoft MVP - Visual C++

"Go that way, really fast. If something gets in your way, turn."

CFileDialog

samira forooghi4-Jul-07 20:32

samira forooghi

4-Jul-07 20:32

Hi everyone
I called CFileDialog.DoMOdal() like this, for save file.

CFileDialog OpenDlg(FALSE ,"Lic", "*.Lic",OFN_FILEMUSTEXIST| OFN_HIDEREADONLY, "*.Lic", this);

if exist new file name in selected path I want show a warring for file replacing.
How do you do it? Please help me.

Re: CFileDialog

CPallini4-Jul-07 21:07

CPallini

4-Jul-07 21:07

Have a look at OFN_OVERWRITEPROMPT flag.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: CFileDialog

samira forooghi4-Jul-07 21:12

samira forooghi

4-Jul-07 21:12

thank u very much Big Grin | :-D

good luck & Good bye

Returning byte array from ActiveX

Vadim Tabakman4-Jul-07 19:57

Vadim Tabakman

4-Jul-07 19:57

Hi All,

I'm writing an ActiveX control, and one of the methods needs to return an array of bytes. This array then needs to be used in Javascript and posted via the MSXML2.XMLHTTP (send).

I've create a method in my ActiveX class that returns a VARIANT, but what ever way I try to create the VARIANT, this fails.

Either I get "type mismatch" when I try to use the data returns, or I get a "Variable uses an Automation type not supported in JScript".

Does anyone know some easy way to return a byte array and use in javascript?
Cheers,
Jub

"If you're too careful, your whole life can become a f---in' grind." - Mike McD (Rounders)

Client and Server communication !! [modified]

ashachandu4-Jul-07 19:42

ashachandu

4-Jul-07 19:42

Hello All,
Let me introduce myself. I am a programmer.

I have been implemented encryption algorithm in pure VC++. It is standalone application. It has dialog box for taking source file name (Plain text file) and destination file name (Encrypted text). It is working perfect.
Now I got new requirement that, I have to integrate this algorithm in explorer as toolbar. I created toolbar and integrated my code. Now I have to send some information to server which has been implemented in J2EE. My question is I am which technology I can use to passing information from client VC++ to server J2EE. And also server will send response client has to process.
I have to implement client side program and one of my friend is working in server. He is asking to provide jar file. Can I know how can I do that? Or Can I use JNI or DCOM server? Please suggest me on this.

Thanks in advance,
Chandu

-- modified at 2:00 Thursday 5th July, 2007

Re: Client and Server communication !!

VishuABCDEFG4-Jul-07 23:13

VishuABCDEFG

4-Jul-07 23:13

thats not the problem buddy.. which ever technology u use it will work. because the network protocols are independent on the technologies.. so when u r communicating between server and client that communication is between two sockets ....

Vishu,
Software Developer,
Target Corporation.
Bangalore.

[Message Deleted]

Jayapal Chandran4-Jul-07 19:41

Jayapal Chandran

4-Jul-07 19:41

[Message Deleted]

Re: Writing global hooks in Dev-c++ IDE

CPallini4-Jul-07 21:15

CPallini

4-Jul-07 21:15

Jayapal Chandran wrote:
so i got a doubt like dev-c++ may not be completely support writing global hooks in it...

IMHO there should be NO problem.

Jayapal Chandran wrote:
i dont want to use visual c++ because i want the code to be in Win32 api...

Actually, you can do Win32 API programming (even plain C) with Visual C++.

Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: Writing global hooks in Dev-c++ IDE

Jayapal Chandran9-Jul-07 18:39

Jayapal Chandran

9-Jul-07 18:39

now it is working... after using the concept of shared variables using #pragma data_seg...

Re: Writing global hooks in Dev-c++ IDE

David Crow5-Jul-07 2:52

David Crow

5-Jul-07 2:52

Jayapal Chandran wrote:
it is not working properly...

What's wrong?

"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

Re: Pragma dataseg for dll's

Mark Salsbery5-Jul-07 8:39

Mark Salsbery

5-Jul-07 8:39

Why would you need to store a global variable in a different data segment?

Jayapal Chandran wrote:
is pragma the only way to do that?

I'll take a guess and say no.

Mark

Mark Salsbery
Microsoft MVP - Visual C++

"Go that way, really fast. If something gets in your way, turn."

Free Resource??

thenewbee4-Jul-07 19:15

thenewbee

4-Jul-07 19:15

I using more than 50 dialog resources in my application..when i click on any of those my system will hang and i have to wait a lot . . .

My System config is...
P4 2.80GHz with 1Gb Ram

Processes running-
AVG antivirus
wdfmgr
svchost(5 instances)
DXDebugService
VsTskMgr
msmgs
mdm
lsass
winlogon
services
cvslock

can any one help me out. . . .
Thanks in ADVANCE . .

Re: Free Resource??

_AnsHUMAN_ 4-Jul-07 19:41

_AnsHUMAN_

4-Jul-07 19:41

thenewbee wrote:
when i click on any of those my system will hang and i have to wait a lot . . .

are you handling the click event of the mouse?
May be there is some indefinete/infinite loop running in your code. I guess it would be very hard to detect the error without you posting some relevant code or describing the exact scenario.

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Re: Free Resource??

Hamid_RT4-Jul-07 19:43

Hamid_RT

4-Jul-07 19:43

Can you more explain about your program and how do you call them how do you make these dialogs and what are these?

WhiteSky

Re: Free Resource??

thenewbee4-Jul-07 21:34

thenewbee

4-Jul-07 21:34

Oh sorry i forgot to mention - prob is in resource editor not when the program is running...

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.