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Hi,
I want to get ALT, SHIFT and CTRL key from keyboard.
Is it possible in OnKeyDown event?
How can I do it?
Hope you can help me.
Thanks.
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OnSysKeyDown
OK,. what country just started work for the day ? The ASP.NET forum is flooded with retarded questions. -Christian Graus
Best wishes to Rexx[^]
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Thanks for the reply.
I think it's the same function as OnKeyDown().
Can I monitor SHIFT and CTRL with it?
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Sorry ignore my previous reply. It's for ATL combination keys.
Clickety[^]
OK,. what country just started work for the day ? The ASP.NET forum is flooded with retarded questions. -Christian Graus
Best wishes to Rexx[^]
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<code>
BOOL bCtrl = ::GetKeyState(VK_CONTROL);
BOOL bAlt = ::GetKeyState(VK_SHIFT);
BOOL bShift = ::GetKeyState(VK_MENU);</code>
This will help you to know the combination keydown tracking.
The secret of life is not enjoyment
but education through experience.
- Swami Vivekananda.
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Mahesh Kulkarni wrote: BOOL bCtrl = ::GetKeyState(VK_CONTROL); BOOL bAlt = ::GetKeyState(VK_SHIFT); BOOL bShift = ::GetKeyState(VK_MENU);
though it is the nice way to get key state, but you have poll this thing every time to get state of the key.,
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
Never mind - my own stupidity is the source of every "problem" - Mixture
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You/codeProject$$>
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Yes alok I do agree with u.
But I got only this solution to do this....if any alternative for this please tell.
The secret of life is not enjoyment
but education through experience.
- Swami Vivekananda.
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Thank you for the reply.
I will try this now.
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I tried your code inside OnKeyDown() event but
the result is unpredictable.
if(::GetKeyState(VK_CONTROL))
AfxMessageBox(L"CONTROL");
if(::GetKeyState(VK_SHIFT))
AfxMessageBox(L"SHIFT");
if(::GetKeyState(VK_MENU))
AfxMessageBox(L"ALT");
When ALT is pressed, either no display or
wrong message(CONTROL or SHIFT)
CONTROL and SHIFT sometimes correct but
sometimes display all.
Did i do something wrong?
How will i use the code?
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Try this...
<code>
BOOL bCtrl = ::GetKeyState(VK_CONTROL)& 0x8000;
BOOL bShift = ::GetKeyState(VK_SHIFT)& 0x8000;
BOOL bAlt = ::GetKeyState(VK_MENU)& 0x8000 ;
</code>
The secret of life is not enjoyment
but education through experience.
- Swami Vivekananda.
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Hello everyone,
Suppose in Pimpl Idiom, we put private members into Pimpl class (implementation class).
(http://www.gotw.ca/gotw/024.htm)
My questions are, if we changed the Pimpl class and do not change visible parts of the whole component (class). There are two parties, component and client. Inside the component, there are two parts, Pimpl part and visible (to client) part.
1. For the component, I think it needs re-compile, since private members of Pimpl part changed are referred by visible parts (public members refer to private members);
2. I am not sure whether for the whole component, it needs to relink? I think it depends on whether other compile unit of the component invokes functions from the Pimpl part of component? Is it correct?
3. I am not sure whether for the client, it needs re-link? If we provide the whole component as a static lib, client needs to re-link, right? And if we provide the whole component as a DLL, and client implicit links with it with import library, does the client needs relink again?
thanks in advance,
George
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Thanks for sharing information from another link, VuNic!
But does it relates to my original question of this thread?
regards,
George
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Rather than ask all of these questions, why don't you dummy up a small example and see how it behaves? Pimpl idiom, opaque pointer, and d-pointer are all related.
"Normal is getting dressed in clothes that you buy for work and driving through traffic in a car that you are still paying for, in order to get to the job you need to pay for the clothes and the car and the house you leave vacant all day so you can afford to live in it." - Ellen Goodman
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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Thanks DavidCrow,
What is d-pointer? 
I divide into small piece because we are discuss in short statements, e.g. ten lines of answers, 5 minutes or less is enough to answer a question. If my questions are too big, I do not want to bring extra burden to people here to answer, say write an answer for 20 minutes.
regards,
George
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<br />
#include "FindNoPlat.h"<br />
#include "stdafx.h"<br />
#include "ODBC1.h"<br />
<br />
#include "ODBC1Set.h"<br />
#include "ODBC1Doc.h"<br />
#include "ODBC1View.h"<br />
<br />
#ifdef _DEBUG<br />
#define new DEBUG_NEW<br />
#undef THIS_FILE<br />
static char THIS_FILE[] = __FILE__;<br />
#endif<br />
<br />
<br />
IMPLEMENT_DYNCREATE(CODBC1View, CRecordView)<br />
<br />
BEGIN_MESSAGE_MAP(CODBC1View, CRecordView)<br />
ON_COMMAND(ID_RECORD_APPEND, OnRecordAppend)<br />
ON_BN_CLICKED(IDC_CHOICE1, OnChoice1)<br />
ON_BN_CLICKED(IDC_CHOICE2, OnChoice2)<br />
ON_COMMAND(ID_RECORD_FIND, OnRecordFind)<br />
ON_COMMAND(ID_FILE_PRINT, CRecordView::OnFilePrint)<br />
ON_COMMAND(ID_FILE_PRINT_DIRECT, CRecordView::OnFilePrint)<br />
ON_COMMAND(ID_FILE_PRINT_PREVIEW, CRecordView::OnFilePrintPreview)<br />
END_MESSAGE_MAP()<br />
<br />
<br />
CODBC1View::CODBC1View()<br />
: CRecordView(CODBC1View::IDD)<br />
{<br />
m_pSet = NULL;<br />
m_cStatus_saman = _T("");<br />
<br />
}<br />
<br />
CODBC1View::~CODBC1View()<br />
{<br />
}<br />
<br />
void CODBC1View::DoDataExchange(CDataExchange* pDX)<br />
{<br />
int iStrLength;<br />
<br />
iStrLength = m_pSet->m_Status_saman.GetLength();<br />
m_cStatus_saman="$"+m_pSet->m_Status_saman.Left(iStrLength-2);<br />
<br />
<br />
CRecordView::DoDataExchange(pDX);<br />
DDX_Control(pDX, IDC_CHOICE2, m_oChoice2);<br />
DDX_Control(pDX, IDC_CHOICE1, m_oChoice1);<br />
DDX_Control(pDX, IDC_EDIT4, m_opermit_perjalanan);<br />
DDX_Control(pDX, IDC_EDIT3, m_oStatus_saman);<br />
DDX_Control(pDX, IDC_EDIT2, m_oSykt);<br />
DDX_Control(pDX, IDC_EDIT1, m_oNo_plat);<br />
DDX_FieldText(pDX, IDC_EDIT1, m_pSet->m_No_plat, m_pSet);<br />
DDX_FieldText(pDX, IDC_EDIT2, m_pSet->m_Sykt, m_pSet);<br />
DDX_FieldText(pDX, IDC_EDIT4, m_pSet->m_permit_perjalanan, m_pSet);<br />
DDX_Text(pDX, IDC_EDIT3, m_cStatus_saman);<br />
}<br />
<br />
BOOL CODBC1View::PreCreateWindow(CREATESTRUCT& cs)<br />
{<br />
<br />
return CRecordView::PreCreateWindow(cs);<br />
}<br />
<br />
void CODBC1View::OnInitialUpdate()<br />
{<br />
m_pSet = &GetDocument()->m_oDBC1Set;<br />
CRecordView::OnInitialUpdate();<br />
GetParentFrame()->RecalcLayout();<br />
ResizeParentToFit();<br />
<br />
}<br />
<br />
<br />
BOOL CODBC1View::OnPreparePrinting(CPrintInfo* pInfo)<br />
{<br />
return DoPreparePrinting(pInfo);<br />
}<br />
<br />
void CODBC1View::OnBeginPrinting(CDC* , CPrintInfo* )<br />
{<br />
}<br />
<br />
void CODBC1View::OnEndPrinting(CDC* , CPrintInfo* )<br />
{<br />
}<br />
<br />
<br />
#ifdef _DEBUG<br />
void CODBC1View::AssertValid() const<br />
{<br />
CRecordView::AssertValid();<br />
}<br />
<br />
void CODBC1View::Dump(CDumpContext& dc) const<br />
{<br />
CRecordView::Dump(dc);<br />
}<br />
<br />
CODBC1Doc* CODBC1View::GetDocument()
{<br />
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CODBC1Doc)));<br />
return (CODBC1Doc*)m_pDocument;<br />
}<br />
#endif //_DEBUG<br />
<br />
CRecordset* CODBC1View::OnGetRecordset()<br />
{<br />
return m_pSet;<br />
}<br />
<br />
<br />
<br />
void CODBC1View::OnRecordAppend() <br />
{<br />
<br />
if (m_pSet->CanAppend() == 0)<br />
MessageBox("Cannot Append Records",<br />
"Database Opening Error",<br />
MB_OK|MB_ICONERROR);<br />
<br />
else<br />
{<br />
m_oChoice1.SetWindowText("Submit Data");<br />
m_oChoice2.SetWindowText("Cancel");<br />
<br />
<br />
<br />
m_oNo_plat.SetWindowText("");<br />
m_oSykt.SetWindowText("");<br />
m_oStatus_saman.SetWindowText("");<br />
m_opermit_perjalanan.SetWindowText("");<br />
}<br />
<br />
}<br />
<br />
.<br />
.<br />
<br />
void CODBC1View::OnRecordFind() <br />
{<br />
<br />
FindNoPlat oFindIt;
BOOL Found=FALSE;
int iStrLength;
char* cQuantity="Empty1";
char* cStorage="Empty2";
CDBVariant varBookmark;
<br />
if (oFindIt.DoModal()==IDOK)<br />
<br />
{<br />
if (m_pSet->CanBookmark())<br />
m_pSet->GetBookmark(varBookmark);<br />
<br />
m_pSet->MoveFirst();<br />
<br />
<br />
while (!m_pSet->IsEOF() ^ Found);<br />
<br />
{<br />
if (m_pSet->m_No_plat == oFindIt.m_FindNoPlat);<br />
Found=TRUE;<br />
<br />
<br />
m_pSet->MoveNext();<br />
<br />
}<br />
<br />
if (!Found);<br />
<br />
{<br />
<br />
MessageBox("Record not found!",<br />
"Database Error",<br />
MB_OK|MB_ICONERROR);<br />
<br />
if (m_pSet->CanBookmark())<br />
m_pSet->SetBookmark(varBookmark);<br />
<br />
else<br />
m_pSet->MoveFirst();<br />
<br />
}<br />
<br />
<br />
{<br />
<br />
m_oNo_plat.SetWindowText(m_pSet->m_No_plat);<br />
m_oSykt.SetWindowText(m_pSet->m_Sykt);<br />
m_opermit_perjalanan.SetWindowText(m_pSet->m_permit_perjalanan);<br />
<br />
<br />
iStrLength = m_pSet->m_Status_saman.GetLength();<br />
m_oStatus_saman.SetWindowText("$" + m_pSet->m_Status_saman);<br />
}<br />
}<br />
<br />
<br />
}<br />
<br />
<br />
this code use to find data in database using application ODBC..
there were 5 error while i compie it..
error C2065: 'FindNoPlat' : undeclared identifier
error C2146: syntax error : missing ';' before identifier 'oFindIt'
error C2065: 'oFindIt' : undeclared identifier
error C2228: left of '.DoModal' must have class/struct/union type
<
can anybody explain it to me..
tq
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It looks like if you fix the first error, the rest of the errors
will go away.
I'd assume the FindNoPlat class is defined in the #included FindNoPlat.h file - is it?
Is the FindNoPlat class in a different namespace?
Mark
Mark Salsbery
Microsoft MVP - Visual C++
![Java | [Coffee]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/coffee.gif)
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if (m_pSet->m_No_plat == oFindIt.m_FindNoPlat);
Found=TRUE;
 , the planted bomb lol
OK,. what country just started work for the day ? The ASP.NET forum is flooded with retarded questions. -Christian Graus
Best wishes to Rexx[^]
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Aren't you supposed to be working 
hehe
Mark Salsbery
Microsoft MVP - Visual C++
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I posted that message when I was putting on my shoes! . Cp Suxx!
OK,. what country just started work for the day ? The ASP.NET forum is flooded with retarded questions. -Christian Graus
Best wishes to Rexx[^]
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Ever heard of formatting? I know your code was probably formatted and this was lost then you pasted it, but you can (and I do) manually paste in tabs and rectify this. I can't be bothered to even look at code when it's presented like this.
Steve
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ieyra204 wrote: can anybody explain it to me..
We already tried. See here.
"Normal is getting dressed in clothes that you buy for work and driving through traffic in a car that you are still paying for, in order to get to the job you need to pay for the clothes and the car and the house you leave vacant all day so you can afford to live in it." - Ellen Goodman
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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In a dll, i start a thread using _beginthread like:
_beginthread(Mythread,0,LPVOID(this));
void MyThread(LPVOID pVoid)
{
CMyClass* pClass = static_cast<CMyClass*>(pVoid);
pClass->SetValue(1);
}
Everything works nicely until i try to access one of the member vars from CMyClass. The app begins to lock up on me. I may be missing something fundamental here. Anyone have any thoughts?
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There's nothing in the code you've shown that looks like it would
lock anything up. Actually the thread shown could finish before
_beginthread() completes on the calling thread
You can examine the call stack of all the threads in the debugger when it's
locked up and maybe that will help determine the offending code.
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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Here's my fundamental question about your thread....
You're now accessing "this" from your thread?
And are you also accessing "this" from the thread that created it?
Are you employing appropriate locks to protect "this"?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br />
Peter Weyzen<br />
Staff Engineer<br />
<a href="http://www.soonr.com">SoonR Inc -- PC Power delivered to your phone</a>
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