C / C++ / MFC

Jack Puppy4-Jul-05 2:31

Jack Puppy

4-Jul-05 2:31

CWinApp::CreatePrinterDC will give you a dc for the active printer, and pDC->GetDeviceCaps(PHYSICALWIDTH), pDC->GetDeviceCaps(PHYSICALHEIGHT) will give you the paper dimensions.

Once you have the dimensions, fill the background with a color of your choice, and then use the dimensions to draw a white "paper" rectangle using pDC->Rectangle.

If you want zooming, you'd have to use SetWindowExt/SetViewportExt in OnPrepareDC to set your zoom level.

Pssst. You see that little light on your monitor? That's actually a government installed spy camera. Smile and wave to big brother!

Painted on the side of a dog trainer's van: SIT HAPPENS

Maverick4-Jul-05 15:49

Maverick

4-Jul-05 15:49

Hey Thanks for this info.. Well, I don't want a print preview per se.. Just want my interface to be that way, with zooming and scrolling.. Anyway, thanks again. This will be a good help as well...

regards,

Anton

"watch the birdie!..."

Maverick5-Jul-05 3:05

Maverick

5-Jul-05 3:05

If you look at MS Word, with a new blank document.. and then choose View->Print Layout menu.. Now, you'll see the white page on the brown/gray background.. on a 100% view

I know that on normal circumstances, the client area of CView entirely occupies the client area of the CCHildFrame..

Now with the Print-Layout View, Is it possible that the white page is drawn on the CView client area but it is NOT occupying the whole client area of CCHIldFrame so thats why we are seeing the background color of CChildFrame?

Or is the white page and the background color are all drawn together in the client area of CView?

Maverick

"watch the birdie!..."

Jack Puppy5-Jul-05 4:25

Jack Puppy

5-Jul-05 4:25

Here's a very simple implementation that simulates drawing a page.

First, create an SDI project that uses CScrollview as its view class.

Make the following changes to the myview.cpp file.

1) Add two constants to the top of the file:

<br />
// Origin for the top/left of the paper<br />
CPoint  g_ptOrigin(50,50);<br />
<br />
// Paper dimensions (simulates a 8.5 x 11" page)<br />
CRect   g_rcPaper(0, 0, 850, 1100);<br />

2) In the OnDraw function, insert the following code:

<br />
pDC->SetBkMode(TRANSPARENT);<br />
pDC->Rectangle(g_rcPaper);<br />
pDC->TextOut(50, 50, _T("This is a test"));<br />

3) Create an override for OnPrepareDC, and insert the following code after the call to the base class:

<br />
<br />
// Map the logical origin to the device origin<br />
// This makes the top left of the client area act like (-50,-50), and the top/left of the page act like (0,0)<br />
pDC->OffsetWindowOrg(-g_ptOrigin.x, -g_ptOrigin.y);<br />
<br />

4) Add a handler for the ON_WM_ERASEBKGND message and replace with the following code:

<br />
CRect rcClient;<br />
GetClientRect(rcClient);<br />
pDC->FillSolidRect(rcClient, RGB(127,127,127));<br />
return (TRUE);<br />

- Step 4 draws your gray background
- Step 3 offsets the dc origin so that drawing is relative to the top left of the paper, not the top left of the client area
- Step 2 draws the paper, with the offset in place

Pssst. You see that little light on your monitor? That's actually a government installed spy camera. Smile and wave to big brother!

Painted on the side of a dog trainer's van: SIT HAPPENS

LOGON Problem

M.Mehrdad.M4-Jul-05 1:18

M.Mehrdad.M

4-Jul-05 1:18

Hi, There.
I Wrote a service in XP, That runs a program.
For Network Access I need to logon as specific user.
Have anybody An idea, suggestion,link,API,help ... ? Confused | :confused:

Logon Can Be on local or remote computer.
Thanks,

2249174-Jul-05 1:36

224917

4-Jul-05 1:36

Check the lpServiceStartName parameter of CreateService()[^]. Make sure this user has access to to required network resource.

suhredayan
There is no spoon.

M.Mehrdad.M4-Jul-05 2:21

M.Mehrdad.M

4-Jul-05 2:21

Thanks a lot
But, Do You Mean That I Can LogOn To System via
CreateService() ? i.e I Can Determine the UserName
and Password In this Function !!!Or a service Can Act
As Users? It is Something new for ME,
Would you pls, Discuss A little about your Idea?

2249174-Jul-05 4:53

224917

4-Jul-05 4:53

M.Mehrdad.M wrote:
Do You Mean That I Can LogOn To System via
CreateService()

By default when you double click a exe it runs under the same user account by which you logged on the the system. But a service starts executing before a user login to the system. So you have to say to the system, under which user account the service should be run, this should be done while the service is created/registered to the system.
CreateService() is the API to Create/register the service with the system and
lpServiceStartName & lpPassword are parameters through you say to the system, under which user account the system should run your application as service.

suhredayan
There is no spoon.

Need Help in Menus ( VC 6 )

David Crow4-Jul-05 11:24

David Crow

4-Jul-05 11:24

Is LogonUser() what you are looking for?

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

m_amin834-Jul-05 1:15

m_amin83

4-Jul-05 1:15

Hello all!
I have a problem regarding the Menus in visual c++ 6.0
I have created the menu and its sub menus. Now I want to Disable (GRAYED) the menu item when required. I have found the function and using it as follows
EnableMenuItem((HMENU)IDR_MENU, ID_OPTIONS_STARTNEWTRACKING, MF_BYCOMMAND | MF_GRAYED);

but it is not working....I have also attached function behind the menu item.

Plz help me in this regard

Amin

Re: Need Help in Menus ( VC 6 )

Jose Lamas Rios4-Jul-05 3:19

Jose Lamas Rios

4-Jul-05 3:19

m_amin83 wrote:
Now I want to Disable (GRAYED) the menu item when required. I have found the function and using it as follows
EnableMenuItem((HMENU)IDR_MENU, ID_OPTIONS_STARTNEWTRACKING, MF_BYCOMMAND | MF_GRAYED);

In MFC applications you don't usually call EnableMenuItem() directly. Take a look at How to Update User-Interface Objects[^]

--
jlr
http://jlamas.blogspot.com/[^]

vs.net c++ to mysql4.1

__horus__4-Jul-05 0:24

__horus__

4-Jul-05 0:24

i'm a novice programmer on Visual studio.net c++ and i need to connect it to mysql 4.1, it can be done with myodbc, bytefx or oledb, to make the normal operations (insert, select, delete, update;)).
please help fast, it's really importante, and a sample application would be great, send it to horus.cv@gmail.com, but the code and the explanation is also good.
thanks;) Sigh | :sigh:

Re: vs.net c++ to mysql4.1

Bruno Miguel Ribeiro Fernandes4-Jul-05 1:19

Bruno Miguel Ribeiro Fernandes

4-Jul-05 1:19

i need to do the same task and don't know how either. please help Sigh | :sigh:

sigh:

1KB/S problem

a_du4-Jul-05 0:18

a_du

4-Jul-05 0:18

I create several worker threads which using CFtpConnection to atuomatically upload a batch of files to a ftp server.
the strange thing is that: even i test on my local ftp server i still find some files get 1KB/S transfer speed.and this is not because of the file as i find the files get this speed is random. why this happend?
Thanx.

Remove LAN-Adapter

chrisigo4-Jul-05 0:09

chrisigo

4-Jul-05 0:09

Hello !

Can anyone tell me how my software can recognize that the LAN-Adapter has been removed from the computer ?

Thank you,

Chris

munawar19684-Jul-05 0:38

munawar1968

4-Jul-05 0:38

See http://www.codeproject.com/internet/getmac.asp?df=100&forumid=2459&exp=0&select=47194#xx47194xx

maybe it'll help.. Keep a list of mac addresses in memory and periodically check if the list is up to date

chrisigo4-Jul-05 1:31

chrisigo

4-Jul-05 1:31

I don' t know if the problem was clear. I don't want to remove the ethernet-card. I will remove the cable from the Adapter. In this case windows shows a tip text message in the right bottom corner.
I thought that I can caught this windows message.

munawar19684-Jul-05 1:52

munawar1968

4-Jul-05 1:52

Check this

/*
* ndis_events - test program for receiving NdisMIndicateStatus()
* events
* Copyright (c) 2004, Jouni Malinen <jkmaline@cc.hut.fi>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* Alternatively, this software may be distributed under the terms
* of BSD license.
*
* See README and COPYING for more details.
*/

#define _WIN32_WINNT 0x0400

#include <windows.h>
#include <stdio.h>
#include <wbemidl.h>
#include <winsock.h>

class CNdisSink;

struct EVENT_HANDLER_MAP
{
const wchar_t* EventName;
void (CNdisSink::*Handler)(IWbemClassObject *pObj);
};

class CNdisSink : public IWbemObjectSink
{
public:
CNdisSink();
~CNdisSink();

// IUnknown members
STDMETHOD(QueryInterface)(REFIID, LPVOID *);
STDMETHOD_(ULONG, AddRef)(void);
STDMETHOD_(ULONG, Release)(void);

// IWbemObjectSink members
STDMETHOD(Indicate)(
long lObjectCount,
IWbemClassObject **ppObjArray);

STDMETHOD(SetStatus)(
long lFlags,
HRESULT hResult,
BSTR strParam,
IWbemClassObject *pObjParam);
public:
int RegisterAsyncNotification(IWbemServices *pSvc);
private:
void AdapterArrival(IWbemClassObject *pObj){}
void AdapterRemoval(IWbemClassObject *pObj){}
void ResetStart(IWbemClassObject *pObj){}
void ResetEnd(IWbemClassObject *pObj){}
void LinkSpeedChange(IWbemClassObject *pObj){}

void MediaConnect(IWbemClassObject *pObj);
void MediaDisconnect(IWbemClassObject *pObj);
void MediaSpecific(IWbemClassObject *pObj);

void ProtocolBind(IWbemClassObject *pObj){}
void ProtocolUnbind(IWbemClassObject *pObj){}

void DevicePowerOn(IWbemClassObject *pObj){}
void DevicePowerOff(IWbemClassObject *pObj){}
private:
static EVENT_HANDLER_MAP s_EventHandlerMap[];
UINT m_cRef;
};

EVENT_HANDLER_MAP CNdisSink::s_EventHandlerMap[] =
{
{ L"MSNdis_NotifyAdapterArrival", &CNdisSink::AdapterArrival },
{ L"MSNdis_NotifyAdapterRemoval", &CNdisSink::AdapterRemoval },
{ L"MSNdis_StatusResetStart", &CNdisSink::ResetStart },
{ L"MSNdis_StatusResetEnd", &CNdisSink::ResetEnd },
{ L"MSNdis_StatusLinkSpeedChange",
&CNdisSink::LinkSpeedChange },
{ L"MSNdis_StatusMediaConnect", &CNdisSink::MediaConnect },
{ L"MSNdis_StatusMediaDisconnect", &CNdisSink::MediaDisconnect },
{ L"MSNdis_StatusProtocolBind", &CNdisSink::ProtocolBind },
{ L"MSNdis_StatusProtocolUnbind", &CNdisSink::ProtocolUnbind },
{ L"MSNdis_StatusDevicePowerOn",
&CNdisSink::DevicePowerOn },
{ L"MSNdis_StatusDevicePowerOff", &CNdisSink::DevicePowerOff },
};

CNdisSink::CNdisSink()
{
m_cRef = 1;
}

CNdisSink::~CNdisSink()
{
}

STDMETHODIMP CNdisSink::QueryInterface(REFIID riid, LPVOID *ppv)
{
*ppv = 0;

if (riid == IID_IUnknown || riid == IID_IWbemObjectSink) {
*ppv = (IWbemObjectSink *) this;
AddRef();
return NOERROR;
}

return E_NOINTERFACE;
}

ULONG CNdisSink::AddRef()
{
return ++m_cRef;
}

ULONG CNdisSink::Release()
{
if (--m_cRef == 0)
{
delete this;
return 0;
}
return m_cRef;
}

void CNdisSink::MediaConnect(IWbemClassObject *pObj)
{
}

void CNdisSink::MediaDisconnect(IWbemClassObject *pObj)
{
}

void CNdisSink::MediaSpecific(IWbemClassObject *pObj)
{
VARIANT vt;
HRESULT hr;
LONG lower, upper, k;
UCHAR ch;
char *data, *pos;
size_t data_len;

printf("MSNdis_StatusMediaSpecificIndication\n");

/* This is the StatusBuffer from NdisMIndicateStatus() call */
hr = pObj->Get(L"NdisStatusMediaSpecificIndication", 0, &vt, NULL,
NULL);
if (FAILED(hr)) {
printf("Could not get NdisStatusMediaSpecificIndication from "
"the object?!\n");
return;
}

SafeArrayGetLBound(V_ARRAY(&vt), 1, &lower);
SafeArrayGetUBound(V_ARRAY(&vt), 1, &upper);
data_len = upper - lower + 1;
data = (char *) malloc(data_len);
if (data == NULL) {
printf("Failed to allocate buffer for event data\n");
VariantClear(&vt);
return;
}

printf(" Data(len=%d):", data_len);
pos = data;
for (k = lower; k <= upper; k++) {
SafeArrayGetElement(V_ARRAY(&vt), &k, &ch);
*pos++ = ch;
printf(" %02x", ch);
}
printf("\n");

VariantClear(&vt);

hr = pObj->Get(L"InstanceName", 0, &vt, NULL, NULL);
if (SUCCEEDED(hr)) {
printf(" InstanceName: '%S'\n", vt.bstrVal);
VariantClear(&vt);
}

free(data);
}

HRESULT CNdisSink::Indicate(long lObjectCount,
IWbemClassObject __RPC_FAR *__RPC_FAR *ppObjArray)
{
//printf("Notification received - %d object(s)\n", lObjectCount);

for (long i = 0; i < lObjectCount; i++)
{
IWbemClassObject *pObj = ppObjArray[i];
HRESULT hr;
VARIANT vtClass;

hr = pObj->Get(L"__CLASS", 0, &vtClass, NULL, NULL);
if (FAILED(hr)) {
printf("Failed to get __CLASS from event.\n");
break;
}

VARIANT vtInstanceName;
hr = pObj->Get(L"InstanceName",
0, &vtInstanceName, NULL, NULL);
if (FAILED(hr)) {
printf("Failed to get __CLASS from event.\n");
continue;
}

for(
size_t j = 0;
j<sizeof(s_eventhandlermap) sizeof(s_eventhandlermap[0]);
="" ++j)
="" {
="" if(wcscmp(
="" vtclass.bstrval,=""
="" s_eventhandlermap[j].eventname)
="=0)
" if(s_eventhandlermap[j].handler)
="" (this-="">*s_EventHandlerMap[j].Handler)(pObj);
break;
}
}

printf(
"%S:\t'%S'\n",
vtClass.bstrVal,
vtInstanceName.bstrVal);

VariantClear(&vtInstanceName);
VariantClear(&vtClass);
}

return WBEM_NO_ERROR;
}

HRESULT CNdisSink::SetStatus(
long lFlags,
HRESULT hResult,
BSTR strParam,
IWbemClassObject *pObjParam)
{
printf("%s\n", "SetStatus");
return WBEM_NO_ERROR;
}

int CNdisSink::RegisterAsyncNotification(IWbemServices *pSvc)
{
wchar_t Sql[128];
for(
size_t i=0;
i<sizeof(s_eventhandlermap) sizeof(s_eventhandlermap[0]);
="" ++i)
="" {
="" wcsncpy(sql,="" l"select="" *="" from="" ",="" 128);
="" wcsncat(sql,="" s_eventhandlermap[i].eventname,="" if="" (psvc-="">ExecNotificationQueryAsync(
L"WQL",
Sql,
0, 0, this) != 0)
return -1;
}

return 0;
}

int main(int argc, char *argv[])
{
HRESULT hr;

hr = CoInitializeEx(0, COINIT_MULTITHREADED);
if (FAILED(hr)) {
printf("CoInitializeEx() failed - returned 0x%x", hr);
return -1;
}

hr = CoInitializeSecurity(NULL, -1, NULL, NULL,
RPC_C_AUTHN_LEVEL_PKT_PRIVACY,
RPC_C_IMP_LEVEL_IMPERSONATE,
NULL, EOAC_SECURE_REFS, NULL);
if (FAILED(hr)) {
printf("CoInitializeSecurity() failed - returned 0x%x", hr);
return -1;
}

IWbemLocator *pLoc = NULL;

hr = CoCreateInstance(
CLSID_WbemLocator,
0,
CLSCTX_INPROC_SERVER,
IID_IWbemLocator,
(LPVOID *) &pLoc);

if (FAILED(hr)) {
printf("CoCreateInstance() failed - returned 0x%x\n", hr);
CoUninitialize();
return -1;
}

IWbemServices *pSvc = 0;

hr = pLoc->ConnectServer(
L"ROOT\\WMI", NULL, NULL, 0, 0, 0, 0, &pSvc);

if (hr) {
printf("Could not connect to server - error 0x%x\n", hr);
CoUninitialize();
return -1;
}
printf("Connected to ROOT\\WMI.\n");

CNdisSink *pSink = new CNdisSink;
if (pSink == NULL) {
printf("Could not allocate sink for events.\n");
CoUninitialize();
return -1;
}

if (pSink->RegisterAsyncNotification(pSvc) < 0) {
printf("Failed to register async notifications\n");
CoUninitialize();
return -1;
}

/* Just wait.. sink will be called with events.. */
while (getchar() != '\n');

pSvc->CancelAsyncCall(pSink);
pSink->Release();
pSvc->Release();
pLoc->Release();

CoUninitialize();

return 0;
}