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You don't need to create the second bitmap, as it is returned by SelectObject() . Also, you're overwriting memBM with the second SelectObject() . Try this:
HDC hDC = GetDC();
HDC memDC = CreateCompatibleDC ( hDC );
HBITMAP memBM = CreateCompatibleBitmap (hDC,dib->biWidth,dib->biHeight);
HBITMAP memBM2;
memBM2 = (HBITMAP)SelectObject ( memDC, memBM );
StretchDIBits(memDC,0,0,dib->biWidth,dib->biHeight,0,0,dib->biWidth,dib->biHeight,lpbits,
(LPBITMAPINFO)&dib,DIB_RGB_COLORS,SRCCOPY);
SelectObject(memDC,memBM2);
ReleaseDC(memDC);
CStatic *temp = (CStatic*)GetDlgItem (IDC_LOGO);
temp->SetBitmap((HBITMAP)memBM);
Also make sure that your BITMAPINFOHEADER is setup correctly. I assume it is because you mentioned you can draw it elsewhere. If the image is 256 colours or less, the BITMAPINFOHEADER structure is NOT equivalent to a BITMAPINFO structure. The BITMAPINFO structure contains a BITMAPINFOHEADER plus the colour table. If the image has more than 256 colours, the colour table is not used and not required. For less than 256 colours it is.
Ryan
Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2nd April 2003, The Lounge)
Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"
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If you've got a HBITMAP handle for your DIB, then the static control will display it directly.
To create an HBITMAP from DIB data, use CreateDIBitmap() .
Hope this helps
Ryan
Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2nd April 2003, The Lounge)
Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"
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Nice answer. I had a feeling mine was too complicated .
Software Zen: delete this;
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Thanks. I got a bit confused when he started out talking about PNGs, but then he said his question was how to convert a DIB to a HBITMAP, so that bit was easy . I just assumed the PNG to be a typo or unnecessary information.
Ryan
Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2nd April 2003, The Lounge)
Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"
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I dont think i can use this sollution because i only have these things handy:
BITMAPINFOHEADER dib;
int dib_size, dib_bits_offs;
char * lpbits;
So i don't see how i can work with that functions...
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That's all you need. The BITMAPINFO structure is simply a BITMAPINFOHEADER followed by a colour table, which I assume you've got. If your image is 16-bit or above, no colour table is needed, so you don't have to worry about it.
For a 16, 24, or 32-bit image, just do this:
BITMAPINFO bi = { dib, 0 };
HBITMAP hbm = CreateDIBitmap(hDC, &dib, CBM_INIT, lpbits, &bi, DIB_RGB_COLORS);
For a 256 or less colour image, you'll need to include the colour table in the BITMAPINFO structure.
Ryan
Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2nd April 2003, The Lounge)
Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"
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Great , it works!
Thank you all
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Hi,
I made a worker thread in my program, and i used CDaoRecordset::GetFieldValue function in the thread.
But every time i got access violation error
Does CDaoRecordset class support threads ?
It's my source code:
while( !theApp.m_EleTele.IsEOF() )<br />
{<br />
pDlg->dwRecords.Add( theApp.m_EleTele.GetAbsolutePosition() ); <br />
pDlg->m_List.AddString( theApp.m_EleTele.GetFieldStr( pDlg->strField ) );<br />
theApp.m_EleTele.MoveNext();<br />
}
GetFieldStr is made by myself and it returns string.
Regards,
Hadi
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If I want to open a modal dialogue in one of multi-thread app, how can I realize this?
......
dlg.DoModal();
......
Thank you in advance!
LeonOrient
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See this article[^] in the MSDN on creating user-interface threads. You can call dlg.DoModal() in the InitInstance member function of your thread class.
Software Zen: delete this;
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If I want to call DoModal function in my normal funcion of my thread class, how to do with this?
Thank you very much!
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It sounds like you want to display a dialog in a worker thread. That doesn't work, because a dialog, like all windows, needs a message pump, which worker threads don't have.
Software Zen: delete this;
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Can I send a message to handle a modal dialogue?
Can you commend a multi-threads sample for me?
Thank you!
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Hi all,
I have problem, i got some drawings/shapes connected with lines(like network) and I want to drag and drop one shape from one place to another, but with this, the lines (thats are connected) should also be move
any ideas/comments will be appriaciated.
thanks
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I have a static control on a dialog that I want to paint icons onto. So I have overridden the OnPaint method and have the following code.
m_StyleHeaderFrame is the member variable linked to the Cstatic control.
IDB_TOOLBARICONS is my resource handle to my bitmap with icons.
<br />
void CNewCharacterPage5::OnPaint() <br />
{<br />
CPaintDC dc( this );
HICON hIcon;<br />
<br />
CDC memDC;<br />
memDC.CreateCompatibleDC( &dc );<br />
<br />
if(m_hWnd && !PaintOnce)<br />
{<br />
pToolbarImages.Create(IDB_TOOLBARICONS, 14, 2, RGB(255, 0, 255));<br />
PaintOnce = true;<br />
}<br />
<br />
CRect rcClient;<br />
m_StyleHeaderFrame.GetClientRect( &rcClient );<br />
rcClient.OffsetRect(-24, 0);<br />
hIcon = pToolbarImages.ExtractIcon(4); <br />
memDC.DrawIcon(rcClient.right, rcClient.top, hIcon);<br />
rcClient.OffsetRect(-24, 0);<br />
hIcon = pToolbarImages.ExtractIcon(1);<br />
memDC.DrawIcon(rcClient.right, rcClient.top, hIcon);<br />
}<br />
Everytime I run the project the CStatic control paints blank. Does anyone know why?
Thanks!
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You only made the memDC compatible to the "dc". You must bitblt the memDC onto the dc to disply it.
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dumb question, but are you sure? I'm not really dealing with Bitmaps and bitblt deals with bitmaps. I tried using it anyways to see if it would work and it didn't change anything.
I do have one bitmap, but I am extracting out icons from that one bitmap and wanting to display them like one would on a toolbar except for me I want them on a static text control. Exactly like the presentation you see in VC++ when you go to Project->Settings->pre-link step. There you see the four icons on the static text control.
Going after the same thing.
I realize there is code out there that does this very thing but that code is very advanced for me and I'm trying to simplify it the best I can. Unless there really is code out there that is simple to understand for the intermediate designer. I could have sworn I saw something a long time ago that did pretty much I am stuggling to attempt, with ExtractIcon and DrawIcon, but I cannot find that code any longer, my mind totally forgot, and I lost my original code.
Thanks!
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You are creating a compatible memory DC. You are doing stuff on it. You need to take this and bitblt to the CPaint DC. Take a look at the Bitblt function.
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whew! Hmmm... well I tinkered with Bitblt. Tried quite a few variations on a theme, poked around other examples and still can't seem to make this work.
Here is the code I finished with
<br />
CPaintDC dc( this );
HICON hIcon;<br />
<br />
CDC memDC;<br />
memDC.CreateCompatibleDC( &dc );<br />
<br />
if(m_hWnd && !PaintOnce)<br />
{<br />
pToolbarImages.Create(IDB_TOOLBARICONS, 14, 2, RGB(255, 0, 255));<br />
PaintOnce = true;<br />
}<br />
<br />
CRect rcClient, rcOriginal;<br />
m_StyleHeaderFrame.GetWindowRect( &rcClient );<br />
ScreenToClient(&rcClient);<br />
rcOriginal = rcClient;<br />
<br />
rcClient.OffsetRect(-24, 0);<br />
hIcon = pToolbarImages.ExtractIcon(4);<br />
memDC.DrawIcon(rcClient.right, rcClient.top, hIcon);<br />
memDC.BitBlt(rcClient.right, rcClient.top, rcClient.right+24, rcClient.bottom, &memDC, 0, 0, SRCCOPY);<br />
<br />
rcClient.OffsetRect(-24, 0);<br />
hIcon = pToolbarImages.ExtractIcon(1);<br />
memDC.DrawIcon(rcClient.right, rcClient.top, hIcon);<br />
memDC.BitBlt(rcClient.right, rcClient.top, rcClient.right+24, rcClient.bottom, &memDC, 0, 0, SRCCOPY);<br />
<br />
dc.BitBlt(rcOriginal.left, rcOriginal.top, rcOriginal.right, rcOriginal.bottom, &memDC, 0, 0, SRCCOPY);<br />
Did I use BitBlt correctly or have I messed up on that too?
Thanks for the help!
Chris
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You know my computer just died on me and I am using another computer without MSDN etc. But to begin with, the variables for the Bitblt for the third anfd fourth variables should be width and height. I am not quite sure what coordinates you are using. for rcOriginal and rcCLient.
You know also, I think you need to create a compatible bitmap and loaded it in. Try a search for CMemDC for no flickering solution. You will fins it very useful and a good example.
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Here is a compiling result:
fatal error C1019:
unexpected #else
The position is at "#else" below:
#ifndef NOT_USE_PRECOMPILED_HEADER
# include "StdAfx.h"
#else
# define VC_EXTRALEAN // Exclude rarely-used stuff from Windows headers
# include <afxwin.h> // MFC core and standard components
#endif
What is wrong?(I used VC6)
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When you are using precompiled headers, the compiler skips everything up to the specified header file. The compiler doesn't preprocess or parse what it skips. In this case, it's skipping everything up to and including the line #include "StdAfx.h" . The first line it sees is therefore the #else , hence the error message.
What are you trying to accomplish by making the precompiled header conditional?
Software Zen: delete this;
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This is not coded by me.
I use it as a class to format foppy disk.
But when compiling my project I found this error,
in the meantime I don't know it too much.
So I want to need a help here.
Now I have displaced it with "#include <stdafx.h>"
Altough I can run my project(in multi-threads), a warnig dialogue
is popped up, saying:"You do not have sufficient rights to perform this operation",when call "DoModal" funtion and reach here:
FormatResult = (*dl_SHFormatDrive)( hWnd,cDrive - 'A', SHFMT_ID_DEFAULT,bQuickFormat?SHFMT_OPT_FULL );
Why is this do you know?
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I am trying to find a way so that not so many file header must be included when I want to use a class from a DLL from a class that has many other headers included. All I know is that when I inlcude one header everything included in it must be included etc. This creates really quite a chain. Any way out of this I do not know.
For one of these situations, I am including a MODELESS dialog in a class. Because the way I am doing it now is to include a pointer to it in the declaration I have to include the header in the main class header. I want to move the header inclusion to the .cpp file. I was thinking about making a global declaration in the .cpp file. Then just create it by new etc. This would be for the entire duration of the program. I do not want to make it modal because that would disrupt the other parts of the program which has to run during this. If multiple programs call this DLL, would this still work?
Would another better way be just to call it modally then call peek and translatemsg etc in that function call?
Anyone know more ways to "hide" the header files so that it does not have to be included for DLL but can be hidden in the .cpp file?
Thank you in advance.
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If I understand you correctly, you need to make use of forward class declarations:
class CDLLClass;
class CYourClass
{
CDLLClass *m_pDLLClass;
}
#include "YourClass.h"
#include "DLLClass.h"
Roger Allen
Sonork 100.10016
Were you different as a kid? Did you ever say "Ooohhh, shiny red" even once? - Paul Watson 11-February-2003
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