Re: How to display an image on the dialog from a Byte array? - C / C++ / MFC Discussion Boards

Re: how to print the data using VC++

diptipanchal27-Apr-09 0:18

diptipanchal

27-Apr-09 0:18

thanks Pallini...I could print the data displayed on the frontend...& customized the printout....Really thanks a lot...

Re: how to print the data using VC++

Hamid_RT24-Apr-09 0:01

Hamid_RT

24-Apr-09 0:01

See Printing a Document (Windows)[^].

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

Re: how to print the data using VC++

diptipanchal27-Apr-09 0:50

diptipanchal

27-Apr-09 0:50

I could print the data displayed on the frontend...& customized the printout. But when the print command is clicked, it displays as below:

Set Font Arial Size = 8
My name is George Papaioannou _________________________________________________________________

Set Font Arial Size = 9
My name is George Papaioannou
....
and so on...

I want to print the data without line feed. that means printout as below.

Set Font Arial Size = 8 My name is George Papaioannou _________________________________________________________________

Set Font Arial Size = 9 My name is George Papaioannou

i don't know where line feed is given in the print?

snippet:
prt.Print(hFont,"Set Font Arial Size = 8",FORMAT_NORMAL);
prt.Print(hFont,"My name is George Papaioannou",FORMAT_NORMAL);
prt.Line (PS_SOLID);

prt.Print(hFont1,"Set Font Arial Size = 9",FORMAT_NORMAL);
prt.Print(hFont1,"My name is George Papaioannou",FORMAT_NORMAL);
prt.Line (PS_SOLID);

I would need to print the data on the same line as actually i want to print text & variable defined in the frontend.

If its only a text there is no problem But i want to print text & variable together which i am not able to print on the same line.

Pl help.....

Convert Project from Multibyte TO Unicode

Varun Bhatt23-Apr-09 19:16

Varun Bhatt

23-Apr-09 19:16

Hi ,
Can anybody help me out as i have an application that is developed using multibyte character set now i have to convert it to Unicode so as the application can provide support to multiple languages.
Thanks

Varun Bhatt

Re: Convert Project from Multibyte TO Unicode

Cedric Moonen23-Apr-09 20:16

Cedric Moonen

23-Apr-09 20:16

If you made sure that you always used TCHAR instead of char then things should not be too difficult. Otherwise, well, you have to replace everything by TCHAR strings. Anyway, this article[^] is very good to get started.

Cédric Moonen
Software developer

Charting control [v2.0 - Updated]
OpenGL game tutorial in C++

Re: Convert Project from Multibyte TO Unicode

Varun Bhatt25-Apr-09 2:55

Varun Bhatt

25-Apr-09 2:55

That was a great help and interesting article.
Thanks !!!!!!!!!!

Varun Bhatt

How to display an image on the dialog from a Byte array?

kapardhi23-Apr-09 18:43

kapardhi

23-Apr-09 18:43

Hai!

I have image data present in an Byte array, the image can be a bitmap, jpg or jp2 image. Now how to paint this byte array on my dialog box as an image?

Thanks!

Re: How to display an image on the dialog from a Byte array?

Nuri Ismail23-Apr-09 21:10

Nuri Ismail

23-Apr-09 21:10

First you have to construct the image from the byte array. You can use CxImage[^].

Try the method:

bool CxImage::Decode(BYTE * buffer, DWORD size, DWORD imagetype)

You can see the demo application from the link. I think that it will help you.

Nuri

Re: How to display an image on the dialog from a Byte array?

CPallini23-Apr-09 21:29

CPallini

23-Apr-09 21:29

kapardhi wrote:
I have image data present in an Byte array, the image can be a bitmap, jpg or jp2 image. Now how to paint this byte array on my dialog box as an image?

I don't know if posting and reposting again and again will actually do the job... Roll eyes | :rolleyes:

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.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

conversion from MultiByte Character set to UNICODE character set

Purish Dwivedi23-Apr-09 18:42

Purish Dwivedi

23-Apr-09 18:42

My application is developed on Multibyte Character Set.Now I want to support UNICODE character set. How can I do it?
Is there any direct way to convert it to support UNICODE character set?

Re: conversion from MultiByte Character set to UNICODE character set

Cedric Moonen23-Apr-09 20:18

Cedric Moonen

23-Apr-09 20:18

Are you the same guy as Varun Bhatt ? Anyway, have a look at this thread[^]

Cédric Moonen
Software developer

Charting control [v2.0 - Updated]
OpenGL game tutorial in C++

Re: conversion from MultiByte Character set to UNICODE character set

Purish Dwivedi23-Apr-09 22:12

Purish Dwivedi

23-Apr-09 22:12

no, Not at all. Why do you think so?
Anyways,thanks for your help.

Keybaord hooking

ashtwin23-Apr-09 18:40

ashtwin

23-Apr-09 18:40

Hi,
i am using the function SetWindowsHookEx() to set the keyboard hook. The code snippet is as follows

if(myHook == NULL)
   myHook = SetWindowsHookEx(WH_KEYBOARD,(HOOKPROC)myFunction, AfxGetApp()->m_hInstance, NULL);

LRESULT myFunction( int ncode, WPARAM wparam, LPARAM lparam)
{
	if((wparam == VK_F10))
	{
	   DoSomething();
	}
	return ( CallNextHookEx(myHook,ncode,wparam,lparam) );
}

The problem is that the function myFunction() is getting called two times.
Can someone tell me how can i avoid this.

Thanks

Re: Keybaord hooking

Randor 23-Apr-09 21:31

Randor

23-Apr-09 21:31

ashtwin wrote:

The problem is that the function myFunction() is getting called two times.

This is normal behavior. When you press a key on your keyboard it generates a keypress and release and if you hold the key down it generates repeat keys. You should probably have a look at how the the KeyboardProc [^]hook procedure is implemented. And if you read About Keyboard Input[^] you will find that you can check the transition state of the key with something like:

if (HIWORD(lparam) & KF_UP)
{
//The key was released.
}

Best Wishes,
-David Delaune

Re: Keybaord hooking

ashtwin26-Apr-09 20:04

ashtwin

26-Apr-09 20:04

Thanks is is working after checking the condition
if((wparam == VK_F10) && (lparam < 0))
{
DoSomething();
}

How can run our application as a Service?

Le@rner23-Apr-09 18:28

Le@rner

23-Apr-09 18:28

Hi all,

i m creating a dialog based application for client side in client Server communication.

i want to run this application on client side as a service please tell me how can i do this.

thanks in advance.

To accomplish great things, we must not only act, but also dream;
not only plan, but also believe.

Re: How can run our application as a Service?

_AnsHUMAN_ 23-Apr-09 18:35

_AnsHUMAN_

23-Apr-09 18:35

Here[^] you will find some ways on how to do it. For others you may search the web in a similar manner

You need to google first, if you have "It's urgent please" mentioned in your question.
Wink | ;-)

_AnShUmAn_

Re: How can run our application as a Service?

Hamid_RT24-Apr-09 0:04

Hamid_RT

24-Apr-09 0:04

See How To Create a NT(Win) Service Using C++ with[^].

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

How can the callback function streamout be called back about richeditor' StreamOut function.

sunhaiminbnu23-Apr-09 16:25

sunhaiminbnu

23-Apr-09 16:25

Hi,All

I want to convert rft format data to txt data with CRichEditCtrl. the code liks belows:

///
void CRichEditorDlg::OnBnClickedButton1()
{
EDITSTREAM es;
es.dwCookie = 1;
es.dwError = 0;
es.pfnCallback = StreamIn;
m_editor.StreamIn(SF_RTF, es);

es.dwCookie = 1;
es.dwError = 0;
es.pfnCallback = StreamOut;
m_editor.StreamOut(SF_TEXT, es);
}

///
DWORD CALLBACK CRichEditorDlg::StreamIn( DWORD_PTR dwCookie, LPBYTE pbBuff, LONG cb, LONG *pcb )
{
return 1;
}

///
DWORD CALLBACK CRichEditorDlg::StreamOut( DWORD_PTR dwCookie, LPBYTE pbBuff, LONG cb, LONG *pcb )
{
return 1;
}

I find that the streamIn can be called back, but the streamOut can no be called back. when I use SF_RTF param in the StreamOut, the StreamOut do call back.

///
m_editor.StreamOut(SF_TEXT, es);

My question is that i hope convert rtf format data to txt format!

Can you help me?

How can I do?

Thanks

SunHaiMin
sunhaiminbnu@tom.com

Re: How can the callback function streamout be called back about richeditor' StreamOut function.

Stuart Dootson23-Apr-09 21:56

Stuart Dootson

23-Apr-09 21:56

The callbacks should be normal functions, not class methods (unless they're static methods, of course). I've just found this code in my archives that writes text out of a richedit control called rich_.

DWORD __stdcall EditStreamCallback(DWORD_PTR dwCookie, LPBYTE pbBuff, LONG cb, LONG *pcb)
{
   LPCWSTR a = LPCWSTR(pbBuff);
   if (dwCookie == 100)
   {
      // pbBuff[0] to pbBuff[cb-1] contain the text of the rich-edit control.
   }
   return 0;
}

void CMyDlg::OnBnStreamOut()
{
   EDITSTREAM es = { 100, 0, &EditStreamCallback };
   rich_.StreamOut(SF_TEXT, es);
}

Note that where I've specified '100', you can specify any pointer value like (say) the pointer to your CRichEditorDlg object, so you could call back into the object from the callback if you needed.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Trapping WM_KEYDOWN and WM_KEYUP on entering text in edit control

EvScott23-Apr-09 12:38

EvScott

23-Apr-09 12:38

Hi,
I need to carry out actions when an individual character is entered into a WIN32 C Edit control. These actions will take place each time a key is pressed and each time a key is released.

Characters will be entered into an Edit control, but the edit control does not know when a keydown/up message is needed, or an onchar.

I would appreciate some help in being able to 'trap' a keydown and keyup event when text is entered in an edit control.
Thanks

Re: Trapping WM_KEYDOWN and WM_KEYUP on entering text in edit control

Stuart Dootson23-Apr-09 12:50

Stuart Dootson

23-Apr-09 12:50

You can subclass[^] the edit control, to process the Windows messages you want to, before passing them on to the edit control.

If you're using MFC, derive from the edit control class[^] to do this.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: Trapping WM_KEYDOWN and WM_KEYUP on entering text in edit control

EvScott23-Apr-09 12:55

EvScott

23-Apr-09 12:55

Thanks Stuart, but I'm using windows 32 API functions and not MFC. Any ideas?

Re: Trapping WM_KEYDOWN and WM_KEYUP on entering text in edit control

Stuart Dootson23-Apr-09 13:03

Stuart Dootson

23-Apr-09 13:03

Yes - the first link[^] in my message showed how to subclass a window just using Win32 calls.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: Trapping WM_KEYDOWN and WM_KEYUP on entering text in edit control

EvScott23-Apr-09 13:53

EvScott

23-Apr-09 13:53

I'm not using a dialog box, I'm using CreateWindow to draw my controls. It appears that the code that you pointed me to is more appropriate for windows interaction with a dialog ctrl: "...The following example shows how to subclass an instance of an edit control in a dialog box..."

If I'm not understanding it correctly, then where in the code would I make changes in order for it to work with my application? I have implemented

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)

and

int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdShow)

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