BitMap coloring [modified] - C / C++ / MFC Discussion Boards

Re: Invoke Default Mail Client (with attachment) [modified]

David Crow2-Jun-06 3:21

David Crow

2-Jun-06 3:21

QuickDeveloper wrote:
Any links or suggestions would do fine.....

SMTP
MAPI

"The largest fire starts but with the smallest spark." - David Crow

Re: Invoke Default Mail Client (with attachment)

Michael Dunn2-Jun-06 7:47

Michael Dunn

2-Jun-06 7:47

I've written MAPI code and tested it with Outlook, so I know it can be done. Post your code.

--Mike--
Visual C++ MVP Cool | :cool:

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SOS urgent Help Required!!!Worker Thread Trouble

Sharath862-Jun-06 1:05

Sharath86

2-Jun-06 1:05

I need to implement a worker thread in an dialog based MFC. the thread callback function (controlling function that i want to use must be a member of the dialg class itlself but the only functions that the AfxBeginThread function is accepting is the function identifier of a global function of type
AfxBeginThread(MyFunc,....);
//the above statement is to be used in a member funciton(button click event) of a dialog based //MFC.exe

UINT MyFunc(LPVOID lpParam);
How can i use AfxBeginThread if MyFunc also needs to be part of the MFC dialog Class.
Any help in this matter would be great.
If any sample code can be given that would be wonderful.

Sharath

Re: SOS urgent Help Required!!!Worker Thread Trouble [modified]

_anil_2-Jun-06 1:21

_anil_

2-Jun-06 1:21

First declare a funtion in your class

static UINT MyFunc(LPVOID pParam);

now onButtonClick()

<br />
OnButtonClick()<br />
{<br />
 CWinThread* pThread = AfxBeginThread( MyFunc, this,<br />
                        THREAD_PRIORITY_NORMAL,<br />
                      0, CREATE_SUSPEND, NULL);<br />
<br />
 if( pThread != NULL ){<br />
    pThread->ResumeTrhead();<br />
 }<br />
}<br />
<br />
UINT classname::MyFunc(LPVOID pParam)<br />
{<br />
  classname* obj;<br />
  obj = (classname*)pParam;<br />
...<br />
}<br />

Regards
Anil

-- modified at 7:22 Friday 2nd June, 2006

Re: SOS urgent Help Required!!!Worker Thread Trouble [modified]

Sharath862-Jun-06 1:35

Sharath86

2-Jun-06 1:35

Thanks a lot it worked...too good i have saved a lot of time thanks to your reply...

Re: SOS urgent Help Required!!!Worker Thread Trouble [modified]

Kelly Herald2-Jun-06 4:50

Kelly Herald

2-Jun-06 4:50

When using worker threads keep this in mind. Don't directly manipulate any window / control that your thread did not create! If you must update a window / control, post a message by using PostMessage to the main thread.

Please read Joseph Newcomer's essay on worker threads here: Using Worker Threads[^].

Kelly Herald
Software Developer
MPC

Re: SOS urgent Help Required!!!Worker Thread Trouble [modified]

Viorel.2-Jun-06 1:51

Viorel.

2-Jun-06 1:51

In addition to the _anil_'s message, after you obtained a pointer to your dialog in static MyFunc function, you can simply call the dialog's member function you need, for instance:

<br />
UINT classname::MyFunc(LPVOID pParam)<br />
{<br />
  classname * const obj;<br />
  obj = (classname*)pParam;<br />
  obj->DoWork(); // call member function<br />
  return 0;<br />
}

It is probably preferable to declare this function as a static member function, inside your class. In this way, you are able to call DoWork even if it is private.

BitMap coloring [modified]

RockyJames2-Jun-06 1:00

RockyJames

2-Jun-06 1:00

Hi,

I have a bitmap which contains a image , i want to change the background color of the Bitmap during runtime..How to get current background color of the bit and how to set new background color to the bitmap.

Thanks in before

James

-- modified at 7:15 Friday 2nd June, 2006

Re: BitMap coloring

Hamid_RT2-Jun-06 1:14

Hamid_RT

2-Jun-06 1:14

you can use CImage m;
m.SetPixelRGB

whitesky

Re: BitMap coloring

RockyJames2-Jun-06 1:33

RockyJames

2-Jun-06 1:33

can be more clear please.i did not get you.

Re: BitMap coloring

Hamid_RT2-Jun-06 1:50

Hamid_RT

2-Jun-06 1:50

you can use GetPixel(x,y) in the loop like this
R=GetRValue(Image.GetPixel(10,10));
m.SetPixelRGB(10,10,R,120,120);
of course this way isnt good because you need to two loop for x and y and if your picture is 1024x768 its not good.
----------
Another way you can draw your bitmap on the dc and use from graphic functions (for example Graphics)
----------
you can codeproject examples that are helpful
Smile | :)

whitesky

Re: BitMap coloring

QuickDeveloper2-Jun-06 1:58

QuickDeveloper

2-Jun-06 1:58

WhiteSky wrote:
Another way you can draw your bitmap on the dc

Could you please tell me how to draw the Bitmap on DC?

thanx for the reply anyway...

"Every morning I go through Forbes list of 40 richest people in the world. If my name is not in there, I go to work..!!!"

Re: BitMap coloring

Hamid_RT2-Jun-06 2:23

Hamid_RT

2-Jun-06 2:23

<br />
HDC hdc=CreateCompatibleDC(::GetDC(this->m_hWnd));<br />
HBITMAP hbit=CreateCompatibleBitmap(GetDC()->m_hDC,800,600);<br />
hbit=(HBITMAP)SelectObject(hdc,hbit);<br />
hbit=(HBITMAP)LoadImage(AfxGetInstanceHandle(),"d:\\error.bmp",IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE|LR_CREATEDIBSECTION);<br />
<br />
SelectObject(hdc,hbit);<br />
BitBlt(GetDC()->m_hDC,0,0,800,600,hdc,0,0,SRCCOPY);<br />

whitesky

Re: BitMap coloring

RockyJames2-Jun-06 2:04

RockyJames

2-Jun-06 2:04

See i go bit by bit..how do i know the current background color of the Bitmap.I do i know ,what ever color i got from Getpixel is the current color of the Bitmap..and last but not least i am using Vc2005..when i declare CImage image; ERROR :undeclared indentifer CImage..?

Re: BitMap coloring

Hamid_RT2-Jun-06 2:20

Hamid_RT

2-Jun-06 2:20

include atlimage

whitesky

Crazy with USB Audio device Mapping! Help pls

Dong Nguyen2-Jun-06 0:42

Dong Nguyen

2-Jun-06 0:42

Hello,

Can anybody help me how to distinguish 2 USB audio devices? I have one PCI2USB card (4 ports) and have 4 USB composite (HID + Audio) devices, which can be use which Skype. Anytime I reboot my PC the device name changed, sometimes it is "USB Audio Device", sometimes it is "USB Audio Device 2", sometimes it is "USB Audio Device 3", and sometimes it is "USB Audio Device 4". Anybody know how Windows assign the USB device name? Any naming convention? And finally, how can I get the VendorID/ProductID from the device name? (For example, i want to know if "USB Audio Device 4" is mapped to which vendorID/ProductID?

Thank you in advanced

Best regards,
Dong

Re: Crazy with USB Audio device Mapping! Help pls [modified]

_anil_2-Jun-06 1:39

_anil_

2-Jun-06 1:39

Hi I hope that you might have known the GUID of your device.
Then you can search for the GUID in registry
[HKYE_LOCAL_MACHINE\SYSTEM\currentcontrolset\control\class]
under this key you will find your GUID key
under your GUID key thir will be one
"MatchingDeviceId" key which stores VID and PID.

Regards
Anil

-- modified at 7:39 Friday 2nd June, 2006

Re: Crazy with USB Audio device Mapping! Help pls [modified]

Dong Nguyen2-Jun-06 5:48

Dong Nguyen

2-Jun-06 5:48

Anil,

Thanks for quick reply.

Seem that under HKYE_LOCAL_MACHINE\SYSTEM\currentcontrolset\control\class, all USB audio devices have the same name "USB Audio Device". I could not find "USB Audio Device (2)", "USB Audio Device (3)", and so on. But if I open Sound and Audio Devices Properties Dialog, I could see 4 USB Audio Devices "USB Audio Device", "USB Audio Device (2)", "USB Audio Device (3)", "USB Audio Device (4)". I could recognize my USB device is "USB Audio Device (2)". But next reboot, my device may be named as "USB Audio Device (3). So, my previous setting becomes wrong.

Best regards,
Dong

wchar_t to char

big_denny_2002-Jun-06 0:42

big_denny_200

2-Jun-06 0:42

Hello again Smile | :)

In Unicode build,how to convert a TCHAR array to array of char -s ?

thanks

Re: wchar_t to char

toxcct2-Jun-06 0:56

toxcct

2-Jun-06 0:56

W2C() macro...

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: wchar_t to char

Maxwell Chen2-Jun-06 1:01

Maxwell Chen

2-Jun-06 1:01

I thought there might be the API UnicodeToAscii, but not for C++ / MFC ...

Maxwell Chen

Re: wchar_t to char

Nibu babu thomas2-Jun-06 3:07

Nibu babu thomas

2-Jun-06 3:07

Maxwell Chen wrote:
I thought there might be the API UnicodeToAscii, but not for C++ / MFC ...

There is are classes CW2A, CA2W.

Nibu thomas
A Developer

Programming tips[^] My site[^]

Re: wchar_t to char

David Crow2-Jun-06 3:24

David Crow

2-Jun-06 3:24

Nibu thomas wrote:
There is are classes CW2A, CA2W.

You forgot to mention that these are ATL macros.

"The largest fire starts but with the smallest spark." - David Crow

Re: wchar_t to char

Amar Sutar2-Jun-06 1:22

Amar Sutar

2-Jun-06 1:22

use WideCharToMultiByte

Amar Smile | :)

Application crashes when build it as MFC in a Static Library

zahid_ash2-Jun-06 0:15

zahid_ash

2-Jun-06 0:15

Hi,

My application is running fine , When Active Configuration is Win32Release and Project->Setting are "Use MFC in a Shared DLL"

but it crashes when Active Sonfiguration is same Win32Release but change the Project->Setting to "Use MFC in a Static Library"

it crashes at following code.

m_pListenSock is an object of CSock class which is inherited from CSocket class.

UINTCServerHandler::OnMsgStart(WPARAM wp, LPARAM lp)
{

m_pListenSock = new CSock();
m_pListenSock->Create (200); // It crashes at Create call
m_pListenSock->Listen ();

return 1;

}

Regard

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