Re: DC, bitmaps, and view questions - C / C++ / MFC Discussion Boards

Tomasz Sowinski3-Sep-02 10:41

3-Sep-02 10:41

There's recently documented APi called 'IsAdmin' - check online MSDN. There's also KB article Q118626 which has similiar function.

Tomasz Sowinski -- http://www.shooltz.com

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Re: AmIAdmin

Michael Dunn3-Sep-02 10:49

Michael Dunn

3-Sep-02 10:49

The alleged IsUserAnAdmin() API doesn't exist in shell32.dll like MS claims. Confused | :confused:

Use Depends and see for yourself. Weird.

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Re: AmIAdmin

Tomasz Sowinski3-Sep-02 10:55

Tomasz Sowinski

3-Sep-02 10:55

Michael Dunn wrote:
Use Depends and see for yourself. Weird

Yeah, you're right. Maybe it's one of functions exported by ordinal??

Tomasz Sowinski -- http://www.shooltz.com

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Re: AmIAdmin

Joaquín M López Muñoz3-Sep-02 22:33

Joaquín M López Muñoz

3-Sep-02 22:33

Sam Blackburn's Win32 Foundation Classes (WFC) [^] provide a function called wfc_am_i_administrator that serves this purpose.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: AmIAdmin

Mike Nordell3-Sep-02 23:53

Mike Nordell

3-Sep-02 23:53

orcun colak wrote:
Is there an api that I can use to check if the current user is administrator.

No. You have to do it manually. Search for SID in MSDN.

DC, bitmaps, and view questions

JohnnyG3-Sep-02 10:21

JohnnyG

3-Sep-02 10:21

I've tried using a CStatic control in my CView derived class to animate a bitmap. I use 4 separate bitmaps but after a couple of minutes (variable) it fails and I get an error related to CBitmap. This also messes up all of Windows graphically. So, after playing around with it, I decided to give up on CBitmap and CStatic. FYI, here is what I had:

MyViewClass::OnTimer(UINT nIDEvent)
{
	if(nIDEvent == m_AnimTimerId)		
	{
		if(BmpId == IDB_ASTLEFT + 4)
			BmpId = IDB_ASTLEFT;

		CStatic *pTargetCtrl = (CStatic *) GetDlgItem(IDC_ERR_STATIC);
		ASSERT(pTargetCtrl != NULL);

		m_CurrentBmp.Detach();
		m_CurrentBmp.LoadBitmap(BmpId);
		pTargetCtrl->SetBitmap(m_CurrentBmp);

                BmpId++;
        }
}

So, I decided to use memory DCs and blt it onto the screen. However, I am not sure I am obtaining the DC correctly since I get an error in the bitblt routine now used in the timer routine.

void CStatsView::InitialDraw()
{
	pTheDC = GetDC();

	// create memory DCs and select animation bitmaps into them for blitting in the timer event
	// for updating the animation. This is done here so that bitmaps are loaded once and only once
	// and they are selected into the memory DCs once also.
	CBitmap			bmp1, bmp2, bmp3, bmp4;		// first, create 4 bitmap objects

	bmp1.LoadBitmap(IDB_ASTLEFT);
	bmp2.LoadBitmap(IDB_ASTLEFT+1);
	bmp3.LoadBitmap(IDB_ASTLEFT+2);
	bmp4.LoadBitmap(IDB_ASTLEFT+4);

	// create compatible memory dcs - compatible with the display
	dcMem1.CreateCompatibleDC(pTheDC);
	dcMem2.CreateCompatibleDC(pTheDC);
	dcMem3.CreateCompatibleDC(pTheDC);
	dcMem4.CreateCompatibleDC(pTheDC);

	// select bitmaps into their respective memory dc
	dcMem1.SelectObject(&bmp1);
	dcMem2.SelectObject(&bmp2);
	dcMem3.SelectObject(&bmp3);
	dcMem4.SelectObject(&bmp4);

}

The OnTimer code now looks like this:

if(BmpId == IDB_ASTLEFT + 4)
    BmpId = IDB_ASTLEFT;
switch(BmpId)
{
    case IDB_ASTLEFT :
        pTheDC->BitBlt(0, 0, 7, 7, &dcMem1, 0, 0, SRCCOPY);
    break;
    case IDB_ASTLEFT + 1 :
            pTheDC->BitBlt(0, 0, 7, 7, &dcMem2, 0, 0, SRCCOPY);
    break;
    case IDB_ASTLEFT + 2 :
        pTheDC->BitBlt(0, 0, 7, 7, &dcMem3, 0, 0, SRCCOPY);
    break;
    case IDB_ASTLEFT + 3 :
        pTheDC->BitBlt(0, 0, 7, 7, &dcMem4, 0, 0, SRCCOPY);
    break;
}

BmpId++;

If that is the case, where in my view should I obtain a pointer to the DC?

Re: DC, bitmaps, and view questions

Tomasz Sowinski3-Sep-02 10:23

Tomasz Sowinski

3-Sep-02 10:23

JohnnyG wrote:
If that is the case, where in my view should I obtain a pointer to the DC?

Use CClientDC, which encapsulates calls to GetDC/ReleaseDC. You should also use CClientDC in InitialDraw.

Tomasz Sowinski -- http://www.shooltz.com

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Re: DC, bitmaps, and view questions

JohnnyG4-Sep-02 17:30

JohnnyG

4-Sep-02 17:30

Ok. Thanks, Tomasz!

progress bar never shows on status bar

RalfPeter3-Sep-02 9:26

RalfPeter

3-Sep-02 9:26

I cannot get my progress bar to show on the status bar. The only way I found around it to show is to use MyPBar.SetWindowPos(...). Doing it this way, though, mispositions the progress bar on different computers. How do I lock it to my status bar? Here's what I have:

In MainFrm.cpp:
CRect rect;
m_wndStatusBar.GetItemRect(2, &rect);
m_ProgBar.Create(WS_VISIBLE | WS_CHILD | PBS_SMOOTH,
rect, this, ID_INDICATOR_PBAR);
m_ProgBar.SetRange(0,100);//Set the range to between 0 and 100
m_ProgBar.SetStep(1);//Set the step amount
//the line below is brute force, can't find out how to display ProgBar
m_ProgBar.SetWindowPos(NULL,782,714,105,16,NULL);

In CView.cpp (or elsewhere):
.
.
.
CMainFrame* pFrame = (CMainFrame*)AfxGetApp()->m_pMainWnd;//pointer to mainframe object
.
.
.
pFrame->m_ProgBar.StepIt();//never shows on status bar

Any suggestions? Thx

ralf.riedel@usm.edu

Re: progress bar never shows on status bar

Tomasz Sowinski3-Sep-02 9:34

Tomasz Sowinski

3-Sep-02 9:34

You should make progress control a child of status bar, not main frame. Check Q142202 for details.

Tomasz Sowinski -- http://www.shooltz.com

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Re: progress bar never shows on status bar

RalfPeter3-Sep-02 11:21

RalfPeter

3-Sep-02 11:21

Q142202? Could not find that article.

ralf.riedel@usm.edu

Re: progress bar never shows on status bar

Tomasz Sowinski3-Sep-02 23:36

Tomasz Sowinski

3-Sep-02 23:36

http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q142202&[^]

Tomasz Sowinski -- http://www.shooltz.com

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Re: progress bar never shows on status bar

Pavel Klocek3-Sep-02 10:04

Pavel Klocek

3-Sep-02 10:04

You can use CProgressBar from Chris M. It's very handy.

Pavel
Sonork 100.15206

Changing Windows background !!!

Hadi Rezaee3-Sep-02 8:14

Hadi Rezaee

3-Sep-02 8:14

Hello there,
How can i change windows background ?
Is there any API function for it ?

Please help me ...

My month article: Game programming by DirectX by Lan Mader.
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Hadi Rezaie

Re: Changing Windows background !!!

lucy3-Sep-02 9:00

lucy

3-Sep-02 9:00

you can overwrite PreCreateWindow function.

Re: Changing Windows background !!!

Hadi Rezaee3-Sep-02 9:07

Hadi Rezaee

3-Sep-02 9:07

I wanna change background of Windows OS !!!
Not dialogs ...

My month article: Game programming by DirectX by Lan Mader.
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Re: Changing Windows background !!!

User 66583-Sep-02 9:14

User 6658

3-Sep-02 9:14

try IActiveDesktop::SetWallpaper

modified 12-Sep-18 21:01pm.

Re: Changing Windows background !!!

Jason Henderson3-Sep-02 9:42

Jason Henderson

3-Sep-02 9:42

Look up SystemParametersInfo.

Jason Henderson
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Re: Changing Windows background !!!

Hadi Rezaee3-Sep-02 10:12

Hadi Rezaee

3-Sep-02 10:12

Hello Jason !!! Big Grin | :-D

That's it !!!!!
Now, it wroks fine Wink | ;)

Thanks in advance Rose | [Rose]

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Inserting a Child dialog to Parent dialog !!!

Hadi Rezaee3-Sep-02 8:10

Hadi Rezaee

3-Sep-02 8:10

Hi there,
I’m looking for a way for inserting a dialog to another …
For example, I have Dialog1(parent) then I make new dialog(child) and then I insert a textbox in the second dialog (Dialog2) …
Is there anyway to attach the Dialog2(child) to Dialog1(parent) ???
I want to when I show the parent wndow(dialog1) by .DoModal() then I be able to see dialog2 in dialog1 !!!

How ???
If possible please write sample

Thanks in advance.

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Re: Inserting a Child dialog to Parent dialog !!!

C^hris L^osinger3-Sep-02 10:44

C^hris L^osinger

3-Sep-02 10:44

http://www.codeproject.com/property/saprefs.asp[^]

this code does it

Gourmet, n:
Anyone whom, when you fail to finish something strange or
revolting, remarks that it's an acquired taste and that you're
leaving the best part.

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Re: Inserting a Child dialog to Parent dialog !!!

Hadi Rezaee3-Sep-02 10:56

Hadi Rezaee

3-Sep-02 10:56

Hello dear Chris Losinger Big Grin | :-D

Thanks aloot for example Wink | ;)

With Warm Regards Rose | [Rose]

My month article: Game programming by DirectX by Lan Mader.
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Hadi Rezaie

DAO: linking dbf table with different extension

AndyR3-Sep-02 6:16

AndyR

3-Sep-02 6:16

The following code works with DAO 3.5, but it doesn't when I add the following line into InitInstance():

<br />
AfxGetModuleState()->m_dwVersion = 0x0601;<br />
....<br />
<br />
CDaoDatabase db;<br />
db.Create("c:\\test.mdb");<br />
<br />
CDaoTableDef td(&db);<br />
<br />
td.Create("test link");<br />
td.SetConnect("dBase IV;Database=C:\\");<br />
<br />
// test.ddf is a dbf created with FoxPro 2.5x & renamed:<br />
td.SetSourceTableName("test.ddf");<br />
<br />
td.Append();<br />

The error message is "The Microsoft Jet database engine could not find the object 'test'. Make sure the object exists and that you spell its name and the path name correctly."

I've tried using "test#ddf" as a vaguely remember reading that this is the key to getting non standard extensions accepted, but this makes no difference in Jet 3.5 or 3.6 (i.e. 3.5 still works Smile | :)

, 3.6 doesn't work Frown | :(

Any ideas?

Re: DAO: linking dbf table with different extension

Lasse3-Sep-02 9:11

Lasse

3-Sep-02 9:11

MFC 6.0 has the ability to use Microsoft Access 2000 databases. To engage this support in your application you use.

AfxGetModuleState()->m_dwVersion = 0x0601;

So to use under DAO 3.5 just remove the line

Hmm...

Re: DAO: linking dbf table with different extension

AndyR3-Sep-02 22:39

AndyR

3-Sep-02 22:39

but the whole point is that I want to use DAO 3.6

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