C / C++ / MFC

How to save drawings in the window to file in format of '.bmp' or '.jpg',etc?

7-Apr-02 0:08

CStdioFile f1;
if( !f1.Open( filepath, CFile::modeRead | CFile::typeText ) )
{
	MessageBox("Could not open file");
	return;
}
CString str1;
while(f1.ReadString(str1))
{
	//do what you want with the line we just read into str1
}
f1.Close()

Regards,
Nish

If I am awake and my eyes are closed, it does not necessarily mean that I am thinking of naked women.

mzt6-Apr-02 23:11

mzt

6-Apr-02 23:11

I draw some graph in the 'CView' with 'CDC', but I can't save it to file.

Re: How to save drawings in the window to file in format of '.bmp' or '.jpg',etc?

Wolfram Steinke6-Apr-02 23:35

Wolfram Steinke

6-Apr-02 23:35

I use Imgsource from Chris Losinger

http://www.smalleranimals.com/isource.htm

saved me many hours

Happy programming!!

Re: How to save drawings in the window to file in format of '.bmp' or '.jpg',etc?

Christian Graus6-Apr-02 23:53

Christian Graus

6-Apr-02 23:53

Read the FAQ.

Christian

The tragedy of cyberspace - that so much can travel so far, and yet mean so little.

"I'm somewhat suspicious of STL though. My (test,experimental) program worked first time. Whats that all about??!?!
- Jon Hulatt, 22/3/2002

Does how making the window size be more than certain value ,but not twinkle?

mzt6-Apr-02 23:02

mzt

6-Apr-02 23:02

I have compiled a single-document program and overload 'OnSize ' of CMainFrame,below is my code.
void CMainFrame::OnSize(UINT nType, int cx, int cy)
{
CFrameWnd::OnSize(nType, cx, cy);
CRect rect;
GetWindowRect(&rect);
if(rect.Height() < 200)
rect.bottom = rect.top + 200;
if(rect.Width() < 200)
rect.right = rect.left + 200;
MoveWindow(rect);
}
Though the length and width of the window are all greater than 200, it twinkles very much. How can I keep it from twinkling?
Still has , and how to make maximize , minimalize and the restore of window and system menu lose efficacy ?

Re: Does how making the window size be more than certain value ,but not twinkle?

Paul M Watt7-Apr-02 7:13

Paul M Watt

7-Apr-02 7:13

I would try doing this in the OnSizing message instead. OnSize occurs after the window has been sized. OnSizing occurs right before the window will be resized.

If the effect that you are trying to create is to make sure that a window can be no less than a certain size, then you will actually want to handle the WM_GETMINMAXINFO message. This will allow you to set the max and min dimensions of you window. Then when the user tries to resize the window, they will not be able to drag the border past the dimensions that you have specified.

Checkout my Guide to Win32 Paint for Intermediates

Low-Level CD access

Hyien6-Apr-02 22:08

Hyien

6-Apr-02 22:08

How can I access a CD at the track level in Win32? I'm trying to access Redbook Audio information.

MFC text box flicker

ejw6-Apr-02 15:05

ejw

6-Apr-02 15:05

I have 2 text boxes, one for inputting numbers and the other is a read only box that reads in that number. Depending on whether that number is even or odd, the read only box changes its background to green(even) or red(odd). However, the text inside the read only box then flickers when it's displayed. How do I fix this?

This is what I have done:

HBRUSH CSmallDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);

CEdit * pEditReadOnly = (CEdit *)GetDlgItem(IDC_EDIT_DISPLAY); //read only
HWND hWndReadOnly = pEditReadOnly->GetSafeHwnd();

if(m_brush)
DeleteObject(m_brush);

CString input_value;

m_INPUT_BOX_VALUE.GetWindowText(input_value); //get value from input
m_DISPLAY_BOX_VALUE.SetWindowText(input_value); //read box displays it

long int number = atoi(input_value); //convert input_value to integer

if(nCtlColor == CTLCOLOR_STATIC &&
hWndReadOnly == pWnd->GetSafeHwnd())
{
pDC->SetBkMode(TRANSPARENT);
if (number % 2 == 0) { // if even change background to green
m_brush = CreateSolidBrush(RGB(0,255,0)); // green background
pDC->SetTextColor(RGB(0,0,0)); // black text
}
else { // else it is odd (red)
m_brush = CreateSolidBrush(RGB(255,0,0)); // red background
pDC->SetTextColor(RGB(255,255,255)); // white text
}
hbr = m_brush;
}
return hbr;
}

Shog⁹6-Apr-02 15:51

6-Apr-02 15:51

Please use the <pre> tag when posting code samples; it's nice to see indentation Smile | :)

I don't know the answer off-hand, but i might try

pDC->SetBkMode(OPAQUE);
pDC->SetBkColor(RGB(0,255,0));

instead of

pDC->SetBkMode(TRANSPARENT);

Sometimes i only remember, The days when i was young
Nowadays no one remembers when they were young and stupid...

ADEMA, The Way You Like It

ejw6-Apr-02 16:09

ejw

6-Apr-02 16:09

That doesn't get rid of the flicker. Frown | :(

Thanks though.

Nish Nishant6-Apr-02 16:38

6-Apr-02 16:38

Are you setting the text each time you change the back color?

Nish

If I am awake and my eyes are closed, it does not necessarily mean that I am thinking of naked women.

Nish Nishant6-Apr-02 16:39

6-Apr-02 16:39

Ignore the last post please.
I didnt read the head post. Just read the 3rd one and replied without thinking Blush | :O

If I am awake and my eyes are closed, it does not necessarily mean that I am thinking of naked women.

Shog⁹6-Apr-02 18:33

6-Apr-02 18:33

Nish [BusterBoy] wrote:
Ignore the last post please.
I didnt read the head post. Just read the 3rd one and replied without thinking

? i'm pretty sure you were right. It took me a while to figure it out though. If you're that good not thinking, then you must be scary when you think. Big Grin | :-D

You'r apostrophe bug's me.

Nish Nishant6-Apr-02 18:46

6-Apr-02 18:46

Shog9 wrote:
? i'm pretty sure you were right.

Yes Smile | :)

I was right.
He is setting the text each time Smile | :)

Man I am really absent minded today

Nish

If I am awake and my eyes are closed, it does not necessarily mean that I am thinking of naked women.

Shog⁹6-Apr-02 18:43

6-Apr-02 18:43

Nish [BusterBoy] wrote:
Man I am really absent minded today

Bah! It's Sunday. And Daylight Savings Time. With a double-whammy like that, who can blame you? Big Grin | :-D

You'r apostrophe bug's me.

Shog⁹6-Apr-02 18:29

6-Apr-02 18:29

Ok, totally didn't pick up on this the first time through, but - You are setting the text for the control each time OnCtlColor() is called. Remember, OnCtlColor() is called for more than just static text controls - your edit box is triggering it also. A much better way (and one which will probably eliminate your flicker) is to synch the text within an EN_CHANGE handler for the edit box, and set only the color within the OnCtlColor() function.

You'r apostrophe bug's me.

Can we get extended info from RAS Connection

ejw6-Apr-02 18:56

ejw

6-Apr-02 18:56

Wow, thanks alot. Smile | :)

Tili6-Apr-02 13:22

Tili

6-Apr-02 13:22

Suppose my ISP allows to give more information than normal ISPs does. Like it gives tells the user is their CLI number is wrong or they should connect at another number because this server is having a lot of load. I want my RAS dialer to recognize this stuff. Can I do without having to communicate directly with modem or terminal. What could be the possible way to workout this stuff.
Thanks in Advance. Confused | :confused:

In my dream, I was dorwning my §orrow§
But my §orrow§, they learned to §wim

Sending a file over socket

Rickard Andersson²⁰6-Apr-02 10:27

Rickard Andersson²⁰

6-Apr-02 10:27

How does it work when I want to send a file through my socket??

I guess I have one clue: I read each byte in the file and send it over to the client from the server. and the client will receive each byte and then make a file with a usual file creating function, such as fopen(...), and the save each byte in that file.

But I'm not sure my clue is working!
I'm NOT using MFC (which is VERY strange to be me! Laugh | :laugh:

)

------------------------------------
Rickard Andersson, Suza Computing
ICQ#: 50302279
I'm from the winter country SWEDEN!

------------------------------------

Nish Nishant6-Apr-02 14:57

6-Apr-02 14:57

Hey Rickard

Didn't you get my winsock sample to run yet?

Nish

If I am awake and my eyes are closed, it does not necessarily mean that I am thinking of naked women.

Rickard Andersson²⁰7-Apr-02 0:27

Rickard Andersson²⁰

7-Apr-02 0:27

But I've figure it out how it works with multithreaded server anyway now... Smile | :)

------------------------------------
Rickard Andersson, Suza Computing
ICQ#: 50302279
I'm from the winter country SWEDEN!

------------------------------------

6-Apr-02 15:37

Basialy ur idea is corret..!! and you must care about stream/datagram and if u can handle the solution in such a way that the handshaking...that s better...if the client send a buffer and waiting for acknowledge and if the acknowledge get ,sene the next ,otherwiese resend the same...

Nish Nishant6-Apr-02 16:36