Re: Programatically create Bitmap file: How To??? - C / C++ / MFC Discussion Boards

udi444417-Jun-04 2:50

17-Jun-04 2:50

hi evrybody
i"m trienig to change my cursor during the time the app runs - first of i load the cursor in the main func
wc.hCursor = LoadCursor( NULL, IDC_ARROW );
where wc is my window and than i want to open a dialogbox where i would change my cursor in

anyone can help on how to do it ???
thanx alot

Re: change cursor in win32

Johan Rosengren17-Jun-04 5:22

Johan Rosengren

17-Jun-04 5:22

You handle the WM_SETCURSOR message in the dialogbox procedure.

Re: change cursor in win32

Scozturk17-Jun-04 5:23

Scozturk

17-Jun-04 5:23

I think you have to handle the wm_setcursor message in the dialog or window and after call it:

<br />
case WM_SETCURSOR:<br />
{<br />
      HCURSOR hCursor = LoadCursor(NULL, MAKEINTRESOURCE(IDC_MYCURSOR));<br />
      SetCursor(hCursor);<br />
      return TRUE;<br />
}<br />

I hope this helps...

Well... I am a beginner ...

Re: change cursor in win32

Michael Dunn17-Jun-04 9:36

Michael Dunn

17-Jun-04 9:36

Don't do it that way, that will load (and leak) the cursor resource every time the window gets a WM_SETCURSOR message. Load the cursor once and keep it in a member variable.

--Mike--
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Programatically create Bitmap file: How To???

JHAKAS17-Jun-04 2:46

JHAKAS

17-Jun-04 2:46

Hi i am doing following:

From my function SaveAsBitmap

	CClientDC dc(this);<br />
	MemDC.Detach ();<br />
	MemDC.CreateCompatibleDC(&dc);<br />
<br />
	m_WfrBmp.Detach ();<br />
	m_WfrBmp.CreateCompatibleBitmap(&dc, 860, 1100);<br />
	CBitmap *pOldBitmap = (CBitmap *)MemDC.SelectObject(&m_WfrBmp);<br />
<br />
	MemDC.SetMapMode(MM_LOENGLISH);<br />
//	MemDC.PatBlt(0, 0, 860, 1100, WHITENESS);	<br />
	MemDC.SetBkMode (TRANSPARENT);<br />
	MemDC.SetBkColor (RGB(255,255,255));<br />
<br />
	MemDC.Rectangle (100,100,400,400);<br />
<br />
        // Now save the bitmap to the BMP file <br />
        Filename ="C:\\12.bmp";<br />
        CDIBSectionLite	dib;<br />
        HBITMAP hnd = (HBITMAP)m_WfrBmp.GetSafeHandle (); 	<br />
        dib.SetBitmap (hnd);<br />
        dib.Save(Filename);

I am getting Black bitmaps only.....

What is the problem...

Any help/suggestions

Leave your mark wherever you go

Re: Programatically create Bitmap file: How To???

V.17-Jun-04 2:50

17-Jun-04 2:50

get your header info and write your bitmap pixel per pixel (binary so use fwrite)

NOTE: write away like BGR and NOT RGB. For some reason it is that way. (think memory access time is the reason, but I'm not sure)

Find some info on the net about the structure of a bmp file.

good luck.

"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimi Hendrix

Re: Programatically create Bitmap file: How To???

KarstenK17-Jun-04 4:24

KarstenK

17-Jun-04 4:24

Maybe you should Get the bits of the MemDc Dead | X|

Try this @ home. (B&B)

Re: Programatically create Bitmap file: How To???

John R. Shaw17-Jun-04 12:04

John R. Shaw

17-Jun-04 12:04

I hope there is nothing attched before you make those calls to Detach() or your program will have resource leaks.

After drawing to the bitmap via Rectangle, select pOldBitmap into MemDC. If either function SetBitmap() or Save() needs to select it into a DC, then neither one can do it until MemDC releases ownership. A bitmap can only be selected into one DC at a time.

INTP

CTreeCtrl

Gizmo7917-Jun-04 2:36

Gizmo79

17-Jun-04 2:36

I currently use a CTreeCtrl with checkboxes for each item. How can I know when I check an item.

Is there an event sent to the control or something else ? The method CTreeCtrl::Getcheck() works, but I must to have informations just when I click, to update several datas ... D'Oh! | :doh:

--
Gizmo

Re: CTreeCtrl

David Crow17-Jun-04 2:55

David Crow

17-Jun-04 2:55

Gizmo79 wrote:
How can I know when I check an item.

Have you looked at either the TVN_SELCHANGED or TVN_SELCHANGING notification?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: CTreeCtrl

Arjan Schouten17-Jun-04 3:00

Arjan Schouten

17-Jun-04 3:00

void C3StateTree::OnLButtonDown(UINT nFlags, CPoint point) 
{
	UINT uFlags = 0;

	HTREEITEM hItem = HitTest(point, &uFlags);

	// Check if the checkbox is clicked
	if( uFlags & TVHT_ONITEMSTATEICON )
	{
		if(GetCheck(hItem))
		{
			// Item is checked but after the click it will be unchecked
			TraverseDownAndSelectTree(hItem, false);
			TraverseUpAndSelectTree(hItem, false);
		}
		else
		{
			TraverseDownAndSelectTree(hItem, true);
			TraverseUpAndSelectTree(hItem, true);
		}
        }
}

Arjan

Re: CTreeCtrl

Gizmo7917-Jun-04 3:16

Gizmo79

17-Jun-04 3:16

Thanks, it works fine.

I don't use the WM_LBUTTONDOWN event, but the NM_CLICK event and it works too.

I didn't know how to verify if the mouse was over the checkbox, but know, it's done. Tanks you.

--
Gizmo

ActiveX registration

marcomars17-Jun-04 2:20

marcomars

17-Jun-04 2:20

Hello,
my MFC dialog based app uses a freeware activex I found on the net.

To use it, the relative ocx file must be registered in the system.

Is there a way to make the app do itself without the user having
to run regsvr32 c:\..... ?

I added the lines

STARTUPINFO si;<br />
PROCESS_INFORMATION pi;<br />
ZeroMemory( &si, sizeof(si) );<br />
ZeroMemory( &pi, sizeof(pi) );<br />
CreateProcess(NULL,                   // No module name (use command line). <br />
              "regsvr32 MyOcx.ocx",// Command line. <br />
              NULL,                   // Process handle not inheritable. <br />
              NULL,                   // Thread handle not inheritable. <br />
              FALSE,                  // Set handle inheritance to FALSE. <br />
              0,                      // No creation flags. <br />
              NULL,                   // Use parent's environment block. <br />
              NULL,                   // Use parent's starting directory. <br />
              &si,                    // Pointer to STARTUPINFO structure.<br />
              &pi );                  // Pointer to PROCESS_INFORMATION structure.*/

inside InitInstance().

It seems to partially work:

with the ocx unregistered, the first time I execute the app
it brings out the information message box saying "DllRegisterServer MyOcx..."
From now on each time I execute the app first I see the box and finall the app.

I'd love to skip the first dummy execution and to close automatically the system info box without having to hit OK.

Any suggestion about this?

Thanks for the precious help.

Marco.

Re: ActiveX registration

Antony M Kancidrowski17-Jun-04 2:38

Antony M Kancidrowski

17-Jun-04 2:38

use "regsvr32 myocx.ocx /s"

NOTE: /s parameter this makes it register silently! Big Grin | :-D

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fuity and sweet.
I'm jelly, what am I? - David Williams (Little Britain)

how to decide the parent dialog

dadacncn17-Jun-04 2:18

dadacncn

17-Jun-04 2:18

Hello,

I have a dialog, for example dialog3, which can be created by dialog1 and dialog2 through .DoModal(). How to decide which dialog is the parent dialog In the class dialog3?

thanks inadvance

Re: how to decide the parent dialog

David Crow17-Jun-04 2:56

David Crow

17-Jun-04 2:56

dadacncn wrote:
How to decide which dialog is the parent dialog In the class dialog3

Are you talking about GetParent(), or IsKindOf()?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: how to decide the parent dialog

dadacncn17-Jun-04 3:11

dadacncn

17-Jun-04 3:11

yes. I think I need GetParent() or IsChild(). But I don't know how to use them. do you have an example? maybe it will help me.

Re: how to decide the parent dialog

User 665817-Jun-04 3:20

User 6658

17-Jun-04 3:20

Haven't tested it, but this might work:

CWnd* pParent = NULL
pParent = GetParent();
if(pParent)
{
   if(pParent->IsKindOf(RUNTIME_CLASS(CDialog1)))
     // true;
   elseif(pParent->IsKindOf(RUNTIME_CLASS(CDialog2)))
     //  true
    else
     // huh?
}

regards

modified 12-Sep-18 21:01pm.

Re: how to decide the parent dialog

dadacncn17-Jun-04 3:51

dadacncn

17-Jun-04 3:51

thank you very much. but in the .h and .cpp files of CDialog1 need DECLARE_DYNAMIC and IMPLEMENT_DYNAMIC.

How to Serialize this?

Tcpip200517-Jun-04 2:17

Tcpip2005

17-Jun-04 2:17

I want to Serialize several HTMLs(2 or >2)with source into a single file.for example *.abc. when I load the file that saved,I can show the HTMLs in a htmlview.How to do this? I have never worked on file Serialize.I need your help.I use VC6.Thank you very much!

Alick

Re: How to Serialize this?

Blake Miller17-Jun-04 4:00

Blake Miller

17-Jun-04 4:00

How about you create a CStringArray.
Copy each stream of HTML text into a separate CString.
Assign these CStrings to the CStringArray.
Serialize the CStringArray to your file.
When you reload it, each HTML 'file' will be in its own CString.
You can use each CString as the HTML text for your view.

Re: How to Serialize this?

Tcpip200517-Jun-04 5:09

Tcpip2005

17-Jun-04 5:09

Thank you for your idea. but how about the source(jpg,gif etc.) and how to encapsulate? I intended to use ziplib. what I want to do is just the direct explore modal of winzip(double click on a zip file,winzip will open it,doesn't extract exactly you can see the files encapsulated in the zip file).
In my condition there is just one addition that I encapsulated just HTMLs with source.I hope I can open a html file in my HtmlView not lanuch IE. That's all.

Thak you all the same,Blake.

Setting Dialog Box position

sschilachi17-Jun-04 2:12

sschilachi

17-Jun-04 2:12

How do you set the position of a dialog box, as you cant call SetWindowPos before DoModal, nor can you call it after, as the dialog box window doesnt exist.

Thanks

Re: Setting Dialog Box position

Antony M Kancidrowski17-Jun-04 2:19

Antony M Kancidrowski

17-Jun-04 2:19

Do it in OnInitDialog()

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fuity and sweet.
I'm jelly, what am I? - David Williams (Little Britain)

Write a simple program that can read/write files from/into a CD

ledallam17-Jun-04 2:03

ledallam

17-Jun-04 2:03

How to access a CD Writer programatically for reading and writing files from hard disk into CD place in the CD Writer in VC++

Madhavi

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.