C / C++ / MFC

Re: PostMessage with WPARAM does not work

5-Oct-11 21:50

explained here[]

solution: try this[] or this[]

MSDN:SendInput function[]

Vaclav_5-Oct-11 23:21

Vaclav_

5-Oct-11 23:21

I have changed to SendMessage and get expected results.
Also adding GetLastError processing AFTER the PostMessage I get expected results.
Can anybody explain why is this happening?

Especialy when it works when only WM_KEYDOWN is used without the wParam.

The lParam should specify number of repeats of the keyboard, right arrow in my case and should be 0.

I am not using any other language, only US English.

Re: PostMessage with WPARAM does not work

enhzflep6-Oct-11 1:10

enhzflep

6-Oct-11 1:10

I just dropped the following code into a program to test the interpretation of

"Specifies the repeat count. The value is the number of times the keystroke is repeated as a result of the user holding down the key."

C++

case WM_KEYDOWN:
    sprintf(szText, "repeat count = %d", lParam & 0xFF);
    MessageBox(NULL, szText, "Guess What?", MB_OK|MB_ICONQUESTION);
    return 1;

While I agree with your interpretation, the message box says that the repeat count is 1.

I'd suppose that when you send WM_KEYDOWN without the wParam, the helper-function that you're calling sets up an appropriate one before calling the 'real' SendMessage, as defined by:

C++

LRESULT SendMessage(

    HWND hWnd,	// handle of destination window
    UINT Msg,	// message to send
    WPARAM wParam,	// first message parameter
    LPARAM lParam 	// second message parameter
   );

Hi there all again! This time with an improvement! (and more clear question about C++ ADO) :)

symeramon5-Oct-11 5:21

symeramon

5-Oct-11 5:21

C++

RecordsetPtr rsUrun;
rsUrun.CreateInstance(__uuidof(Recordset));
	try{

_variant_t Holder;

CString cQry=_T("");
CString cTmp=_T("");
_stUrun stTmp;
vUrun.clear();

cQry=_T("Select * From urun order by adi");
//AfxMessageBox(cQry);
rsUrun->Open(_variant_t(cQry),AdoTest.GetInterfacePtr(),adOpenDynamic,adLockOptimistic,adCmdText);
CStringArray caTmp;
int nPs=0;
while(!rsUrun->adoEOF)
{
stTmp.cUrunAd=_T("");
stTmp.dBirimf=0;
stTmp.nDBID=0;

	Holder = rsUrun->GetCollect("urunid");//id
	if(Holder.vt!=VT_NULL) stTmp.nDBID=atoi((char*)_bstr_t(Holder));

	Holder = rsUrun->GetCollect("adi");//name
	if(Holder.vt!=VT_NULL) stTmp.cUrunAd=(char*)_bstr_t(Holder);

	Holder = rsUrun->GetCollect("birimf");//cost
	if(Holder.vt!=VT_NULL) stTmp.dBirimf=atof((char*)_bstr_t(Holder));

	vUrun.push_back(stTmp);
	CString adi = rsUrun->GetCollect("adi");
	listbo1.AddString(_T(adi));
	int gfujf = listbo1.GetItemData(listbo1.GetCount()-1);
rsUrun->MoveNext();

SO here is the code, could you please help me on how can I get the listbox item's id in order to use it in an update query?? Here is my button below, I did some work on it but seems no good Frown | :(

C++

void CTestADSSQLDlg::OnBnClickedButton1()
{
	_RecordsetPtr rsUrun;
rsUrun.CreateInstance(__uuidof(Recordset));
CString cQry=_T("Update urun set adi='%s' where urunid='%d'", editbo1;

rsUrun->Open(_variant_t(cQry),AdoTest.GetInterfacePtr(),adOpenDynamic,adLockOptimistic,adCmdText);
}

Re: Hi there all again! This time with an improvement! (and more clear question about C++ ADO) :)

David Crow5-Oct-11 8:10

David Crow

5-Oct-11 8:10

symeramon wrote:
CString cQry=_T("Update urun set adi='%s' where urunid='%d'", editbo1;

Seems a parenthesis has gone AWOL.

symeramon wrote:
SO here is the code, could you please help me on how can I get the listbox item's id...

Umm, since you are using MFC, why not just assign it a CListBox member variable? Use ClassWizard (or equivalent).

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous

Re: Hi there all again! This time with an improvement! (and more clear question about C++ ADO) :)

symeramon6-Oct-11 0:47

symeramon

6-Oct-11 0:47

Thanks David, at least you answered my question... But the main problem is how can I get the id from vector to use it in the button click event?

Re: Hi there all again! This time with an improvement! (and more clear question about C++ ADO) :)

David Crow6-Oct-11 2:55

David Crow

6-Oct-11 2:55

symeramon wrote:
But the main problem is how can I get the id from vector...

What does a vector have to do with any of this?

symeramon wrote:
...use it in the button click event?

BEGIN_MESSAGE_MAP(CMyDialog, CDialog)
    //{{AFX_MSG_MAP(CMyDialog)
    ON_BN_CLICKED(IDC_SOME_BUTTON, OnButtonClicked)
END_MESSAGE_MAP()
...
void CMyDialog::OnButtonClicked() 
{
    m_listbox.AddString(_T("Hello World!"));
}

Re: Hi there all again! This time with an improvement! (and more clear question about C++ ADO) :)

symeramon7-Oct-11 5:33

symeramon

7-Oct-11 5:33

Thanks for your reply David... Finally I got it, by SetItemData! Smile | :)

MFC usage

mysmax5-Oct-11 2:01

mysmax

5-Oct-11 2:01

1, Window Design
2, Skining the Dialog
3, Other plug in usage

if any one have answers with simple snippets please refer me.

Albert Holguin5-Oct-11 2:53

Albert Holguin

5-Oct-11 2:53

Are you trying to ask how its used? MFC is basically an objected oriented layer around the WinAPI, but it's not just that, it provides a framework for development. As a framework, it provides base abstraction layers for creating objects, windows, threads, lists, arrays, strings, controls, and many more objects common in desktop development.

Stefan_Lang6-Oct-11 1:32

Stefan_Lang

6-Oct-11 1:32

Albert Holguin wrote:
basically an objected oriented layer

Emphasis mine: Personally I always considered MFC (any version) to be version 1.0.x of Microsofts attempt to make an object oriented layer. Even the most recent versions still contain way too much remnants of C-style programming to be rightfully called 'object oriented'. To just name one example (or two): the WPARAM and LPARAM parameters widely used in functions all over the API are IMNSHO an abomination all by themselves. Or the 'type', HANDLE: Try to figure out what that type really is, and you'll find there are quite a few different variants, many of them incompatible with each other (as I've learned the hard way)

My hopes are on Windows 8: maybe Metro will provide the long-awaited 'Windows API 2.0' ...

Software_Developer5-Oct-11 3:11

5-Oct-11 3:11

1, Window Design

C++ and Microsoft Foundation Class (MFC) For Windows GUIs
http://www.tenouk.com/cplusplusnmfc.html

Fundamentals of Windows Controls
http://www.functionx.com/visualc/Lesson07.htm

2, Skining the Dialog

Add Skin to your Visual C++ MFC application, download source codes
http://www.ucancode.net/Visual_C_Codes/Add-Skin-to-your-Visual-C-MFC-application-download-source-codes.htm

Skins in a Dialog Based Application
http://www.codeproject.com/KB/dialog/skindlg.aspx

CDialogSK - A Skinnable Dialog Class
http://www.codeproject.com/KB/dialog/cdialogsk.aspx Class

3, Other plug in usage

An MFC extension library to enable DLL plug-in technology for your application using MESSAGE_MAPs
http://www.codeproject.com/KB/library/piarchitecture.aspx

MFC extension library : Single instance Plug-In
http://www.codeproject.com/KB/library/PlgInArchSingInst.aspx

Richard MacCutchan5-Oct-11 4:42

Richard MacCutchan

5-Oct-11 4:42

Do you really need to use bold text for a simple list of links?

Unrequited desire is character building. OriginalGriff

Software_Developer5-Oct-11 5:13

5-Oct-11 5:13

LOL.. i like to be dramatic. Just to put a little empasis on topics Cool | :cool:

C++ Providers

rupeshkp7285-Oct-11 1:36

rupeshkp728

5-Oct-11 1:36

I am new into writing C++ providers.
Can anyoone let me know the basics of provider writing.
I mean I wanted to know about Provider types(Instance, Method, Indication) and why are they needed etc
What are properties, mof, cim, schema etc.

_AnsHUMAN_ 5-Oct-11 1:52

_AnsHUMAN_

5-Oct-11 1:52

Providers are used to provide dynamic data which are not stored in internal datastore for the CIMOM .
More details[^] can be found in the link.
Also if you could google with "C++ provider" keyword you can get more results and channels to start.

You talk about Being HUMAN. I have it in my name
AnsHUMAN

rupeshkp7285-Oct-11 1:59

rupeshkp728

5-Oct-11 1:59

Thanks Anshuman I will have a look at the link.

Software_Developer5-Oct-11 3:31

5-Oct-11 3:31

Visual C++ 6.0 OLE DB Provider Templates
http://msdn.microsoft.com/en-us/library/aa260857(v=vs.60).aspx[^]

Provider Model: Introduction to the Provider Model
http://msdn.microsoft.com/en-us/library/Aa479030[^]

How to Copy static array to dynamic array

rupeshkp7285-Oct-11 4:39

rupeshkp728

5-Oct-11 4:39

Thanks Topcoder for the links

002comp4-Oct-11 23:34

002comp

4-Oct-11 23:34

Hello Friends
I want to copy an array of Point3 object to Dynamic Array object of Point3.

I am having Point3 verts[1000],which stores point3 for some size ,say 600.

i want to copy to another Point3 object with size of 600.
Like, Point3* tempVerts = new Point3[600]

Thanks In Advance.
Regards
Yogesh

_AnsHUMAN_ 5-Oct-11 1:19

_AnsHUMAN_

5-Oct-11 1:19

tempVerts[i] = verts[i]; // i would be a variable incremented each time by 1 in a loop
BTW can you use a vector<point3> rather than allocating an array dynamically if it fits your design?

You talk about Being HUMAN. I have it in my name
AnsHUMAN

Code-o-mat5-Oct-11 2:39

Code-o-mat

5-Oct-11 2:39

How'bout:

Point3* tempVerts = new Point3[600];
memcpy(tempVerts, verts, sizeof(Point3)*600);

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> If it doesn't matter, it's antimatter.<

Albert Holguin5-Oct-11 2:57

Albert Holguin

5-Oct-11 2:57

Correct (+5)... but if it's dynamic then it would be more like (to clarify for OP)...

Point3* tempVerts = new Point3[array_size];
memcpy(tempVerts, verts, sizeof(Point3)*array_size);

//don't forget to delete from heap