Rotating bitmap around its center - C / C++ / MFC Discussion Boards

Re: Can we use the "Source Browser" in VC.net

Maxwell Chen22-Apr-04 16:15

Maxwell Chen

22-Apr-04 16:15

I dunno. Even the "Browse Information" fails! Dead | X|

Maxwell Chen

Problem with sizing

ykutanoor21-Apr-04 23:01

ykutanoor

21-Apr-04 23:01

Sir,

I am integrating flash with VC++.

I am using Dialog Based App.

I inserted this Active X Control.

I wanted to show both this Control and Dialog Window in a maximized state.

I called ShowWindow(SW_MAXIMIZED) in OnInitDialog.

When I execute the App I get the main window in maximized but the control in that is not at all maximized.
Pls help.
Regards
Chintu

Re: Problem with sizing

Cedric Moonen22-Apr-04 1:13

Cedric Moonen

22-Apr-04 1:13

You'll have to move yourself the control at the size and position you want based on the client coordinates of the parent window.
Take a look at MoveWindow in the MSDN.

CImageList + CTreeCtrl problem

YaronNir21-Apr-04 22:57

YaronNir

21-Apr-04 22:57

Hi all,

I have my class that Inherites from CTreeCtrl.
I override OnPain() and i draw the items myself.
next to each item i am trying to draw an image

i use the following code:

// creating the bitmap:
m_imageOptions.Create(IMAGE_DIMENTIONS,
		  IMAGE_DIMENTIONS,
		  ILC_COLOR24 | ILC_MASK,
		  MAX_OPTIONS_NUM,
		  0);

// drawing the bitmap OnPaint() override
hBmp = pDlgInf->GetBmp();
CBitmap bmp;
if (NULL != hBmp)
{
 bmp.Attach(hBmp);
 iImage = m_imageOptions.Add(&bmp,TRANSPARENT_CLR);
 bmp.Detach();
 ::DeleteObject(hBmp);
}				
		
CPoint pnt(rc.left + SPACE_WIDTH / 5,rcText.top);
m_imageOptions.Draw(pDC,iImage,pnt,ILD_TRANSPARENT);

// don't handle the OnEraseBkgrnd
BOOL CPrfTreeCtrl::OnEraseBkgnd(CDC* pDC) 
{
	return TRUE;
}

problem:
I manage to see the image next to the item, but if i drag my dialog (the tree
is placed over a dialog), outside of the screen boundaries and then drag it
back within the screen boundaries, the image is gone...other drawing of the tree (such as the items) are correct....

what am i doing wrong? can any1 help?

thanks in advanced

Yaron

Ask not what your application can do for you,
Ask what you can do for your application

How to create a list ctrl with transparent background?

Avraham21-Apr-04 22:27

Avraham

21-Apr-04 22:27

Hi,
Please help me.
I need to draw a list control that is placed on a diagram and it should be transparent.

Re: How to create a list ctrl with transparent background?

Rob Caldecott21-Apr-04 23:05

Rob Caldecott

21-Apr-04 23:05

You can display an image as the list control background using the following code:

LVBKIMAGE image;
memset(&image, 0, sizeof(image));
image.ulFlags = LVBKIF_STYLE_NORMAL|LVBKIF_SOURCE_URL;
image.pszImage = szFileName;
image.xOffsetPercent = 50;
image.yOffsetPercent = 50;

SendMessage(m_hListView, LVM_SETBKIMAGE, 0, (LPARAM)&image);
SendMessage(m_hListView, LVM_SETTEXTBKCOLOR, 0, CLR_NONE);

The Rob Blog

Re: How to create a list ctrl with transparent background?

Avraham21-Apr-04 23:53

Avraham

21-Apr-04 23:53

Thanks a lot,
It works perfectly.

Rotating bitmap around its center

Gadjuka21-Apr-04 21:57

Gadjuka

21-Apr-04 21:57

Hi!
I'm trying to get a bitmap to rotate. I want the bitmap to rotate around its midpoint (or an abitrary point)
I first used the formula:

<br />
xNew = (x * cosTemp) - (y * sinTemp);<br />
yNew = (x * sinTemp) + (y * cosTemp);<br />

but this only rotated the bitmap around the upper-left corner, and therefore I changed to this:

<br />
xNew = ((x * cosTemp) - (y * sinTemp)) + xRotAxis;<br />
yNew = ((x * sinTemp) + (y * cosTemp)) + yRotAxis;<br />

now the image is rotating around the x-and yRotAxis, BUT at the upper-left corner of the surface and thus hiding 3/4:s of the picture!

How do I make it rotate around its center at the surfaces' center? Confused | :confused:

Help with CSplitterWnd->CreateView method,trying to load a CDialog derived class

Victor Nikol21-Apr-04 21:25

Victor Nikol

21-Apr-04 21:25

Help with CSplitterWnd->CreateView method,trying to load a CDialog derived class
When I sply a window in two, I use on the left frame a class derived from CImageView,and on the right frame a class derived from CFormView. No problem here. But if I change the right frame class to another one derived from CDialog,is not working.How can I solve this?

Help finding old intel MMX application notes

uus9921-Apr-04 20:58

uus99

21-Apr-04 20:58

I'm just starting to program using MMX, but i couldnt find old intel MMX application notes on the website. It seems the link has changed, i tried searching for it but couldnt find it. Can anyone help me what is the link to intel mmx application notes?

I'm trying to find this and others,

Color Conversion from YUV12 to RGB Using Intel MMX™ Technology

Old link, but cannot find it.
http://developer.intel.com/drg/mmx/appnotes/ap548.htm

Re: Help finding old intel MMX application notes

uus9921-Apr-04 21:32

uus99

21-Apr-04 21:32

Some other Image Effects MMX application notes that i cannot find. Can someone help? Where are the notes anyway? Even the search doesnt give a result!

http://developer.intel.com/drg/mmx/appnotes/colorcon.htm
http://developer.intel.com/drg/mmx/appnotes/image2x.htm
http://developer.intel.com/drg/mmx/appnotes/ap546.htm
http://developer.intel.com/drg/mmx/appnotes/ap552.htm
http://developer.intel.com/drg/mmx/appnotes/ap550.htm

Re: Help finding old intel MMX application notes

Anonymous21-Apr-04 23:45

Anonymous

21-Apr-04 23:45

http://developer.intel.com/design/archives/processors/mmx/index.htm

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclang/html/vcrefsupportformmxtechnology.asp

http://codeproject.com/cpp/mmxintro.asp

Re: Help finding old intel MMX application notes

uus9922-Apr-04 20:24

uus99

22-Apr-04 20:24

I've contacted Intel, and they said that MMX application notes were removed due to age. An older copy of the notes can still be found at a third party website at

http://www.ee.und.ac.za/DataCDs/Intel/DRG/MMX/APPNOTES/

Anonymous, thanks anyway Smile | :)

displaying Integer.

amardude21-Apr-04 20:52

amardude

21-Apr-04 20:52

Hello friends,
I want to display an integer value in the messagebox. How do I do that?

Amar.

Re: displaying Integer.

Maxwell Chen21-Apr-04 21:07

Maxwell Chen

21-Apr-04 21:07

int iNum = 123;
CString sText;
sText.Format("iNum = %d", iNum);
AfxMessageBox(sText);

Maxwell Chen

Re: displaying Integer.

amardude21-Apr-04 21:57

amardude

21-Apr-04 21:57

Hi Thanks Maxwell.
But I am not using MFC. It is a simple C program.
Also do I need to include any header file to use CString.

Amar.

Re: displaying Integer.

Maxwell Chen21-Apr-04 22:24

Maxwell Chen

21-Apr-04 22:24

Forget about CString stuff, since it is of C++.

For C program, do this way:
//
#include <windows.h>

/* ..... */

/* in your function, for example. */
void FooBar()
{
int iNum = 12345;
char sText[12] = {0};
sprintf(sText, "%d", iNum);

/* Including windows.h is for MessageBox function call. */
MessageBox(NULL, sText, "MyMsg", MB_OK);
}

<b>Maxwell Chen</b>

Re: displaying Integer.

Anonymous22-Apr-04 5:47

Anonymous

22-Apr-04 5:47

Thanks again Maxwell

Amar.

Re: displaying Integer.

Rory Solley21-Apr-04 22:49

Rory Solley

21-Apr-04 22:49

int iNum = 123;
TCHAR szNumAsString[256]; // arbitrary size
_stprintf(szNumAsString, _T("%d"), iNum);
::MessageBox(NULL, szNumAsString, _T(""), MB_OK);

Re: displaying Integer.

Maxwell Chen21-Apr-04 23:03

Maxwell Chen

21-Apr-04 23:03

There is no scope resolution operator :: in C. Unsure | :~

Maxwell Chen

Re: displaying Integer.

Rory Solley21-Apr-04 23:11

Rory Solley

21-Apr-04 23:11

My mistake (typo), die-hard C++ programmer.

how to disable precompiled headers ?

intelligent21-Apr-04 20:35

intelligent

21-Apr-04 20:35

beginner of VC , confused a lot .
thx for any help.

Re: how to disable precompiled headers ?

Anonymous21-Apr-04 21:13

Anonymous

21-Apr-04 21:13

Go the Project/Settings menu, then click on C/C++, select 'Precompiled Headers' from the category dropdown, and switch them off.

Re: how to disable precompiled headers ?

toxcct21-Apr-04 23:14

toxcct

21-Apr-04 23:14

don't your problem come from that error ? :
fatal error C1010: unexpected end of file while looking for precompiled header directive
try to place the #include "stdafx.h" before all other includes...

you can also read the FAQ

TOXCCT >>> GEII power

Re: how to disable precompiled headers ?

Prakash Nadar22-Apr-04 1:06

Prakash Nadar

22-Apr-04 1:06

Sometimes you do have to disable precompiler headers inorder to compile.

God is Real, unless declared Integer.

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