Re: Simulating keys - C / C++ / MFC Discussion Boards

Save BMP image from CLIPBOARD to disk

Michae_geffen12-Jun-04 10:54

Michae_geffen

12-Jun-04 10:54

I would like to know how to save BMP image from Clipboard to the disk

Michael Geffen

Re: Save BMP image from CLIPBOARD to disk

Scozturk12-Jun-04 23:50

Scozturk

12-Jun-04 23:50

Hi!
You can use this. You can get the hdc by GetDC...

<br />
int	Screenshotal(HDC hdc, char *pszflname)<br />
{<br />
	HDC					memdc;<br />
	HANDLE				hfl;<br />
	DWORD				dwBytes, dwWidth, dwHeight, dwNumColors, dwBPP, ColorSize;<br />
	void				*pBits;<br />
	HBITMAP				hbmp;<br />
	BITMAPFILEHEADER	fileheader;<br />
	BITMAPINFOHEADER	infoheader;<br />
	RGBQUAD				colors[256];<br />
	BITMAPINFO			bmpinfo;<br />
	HGDIOBJ				hret;<br />
<br />
	dwWidth = GetDeviceCaps(hdc, HORZRES);<br />
	dwHeight = GetDeviceCaps(hdc, VERTRES);<br />
	dwBPP = GetDeviceCaps(hdc, BITSPIXEL);<br />
	if (dwBPP <= 8)<br />
		dwNumColors = 256;<br />
	else<br />
		dwNumColors = 0;<br />
	if (!(memdc = CreateCompatibleDC(hdc)))<br />
		return (0);<br />
	bmpinfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);<br />
	bmpinfo.bmiHeader.biWidth = dwWidth;<br />
	bmpinfo.bmiHeader.biHeight = dwHeight;<br />
	bmpinfo.bmiHeader.biPlanes = 1;<br />
	bmpinfo.bmiHeader.biBitCount = (WORD)dwBPP;<br />
	bmpinfo.bmiHeader.biCompression = BI_RGB;<br />
	bmpinfo.bmiHeader.biSizeImage = 0;<br />
	bmpinfo.bmiHeader.biXPelsPerMeter = 0;<br />
	bmpinfo.bmiHeader.biYPelsPerMeter = 0;<br />
	bmpinfo.bmiHeader.biClrUsed = dwNumColors;<br />
	bmpinfo.bmiHeader.biClrImportant = dwNumColors;<br />
	hbmp = CreateDIBSection(hdc, &bmpinfo, DIB_PAL_COLORS, &pBits, NULL, 0);<br />
	if (!hbmp)<br />
	{<br />
		DeleteDC(memdc);<br />
		return (0);<br />
	}<br />
	hret = SelectObject(memdc, hbmp);<br />
	if (!hret || (hret == HGDI_ERROR))<br />
	{<br />
		DeleteDC(memdc);<br />
		return (0);<br />
	}<br />
	if (!BitBlt(memdc, 0, 0, dwWidth, dwHeight, hdc, 0, 0, SRCCOPY))<br />
	{<br />
		DeleteDC(memdc);<br />
		return (0);<br />
	}<br />
	if (dwNumColors)<br />
		dwNumColors = GetDIBColorTable(memdc, 0, dwNumColors, colors);<br />
	fileheader.bfType = 0x4D42;<br />
	ColorSize = dwNumColors * sizeof(RGBQUAD);<br />
	fileheader.bfSize = ((dwWidth*dwHeight*dwBPP) >> 3) + ColorSize + sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER);<br />
	fileheader.bfReserved1 = fileheader.bfReserved2 = 0;<br />
	fileheader.bfOffBits = ColorSize + sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER);<br />
	infoheader.biSize = sizeof(BITMAPINFOHEADER);<br />
	infoheader.biWidth = dwWidth;<br />
	infoheader.biHeight = dwHeight;<br />
	infoheader.biPlanes = 1;<br />
	infoheader.biBitCount = (WORD)dwBPP;<br />
	infoheader.biCompression = BI_RGB;<br />
	infoheader.biSizeImage = infoheader.biClrImportant = 0;<br />
	infoheader.biXPelsPerMeter = infoheader.biYPelsPerMeter = 0;<br />
	infoheader.biClrUsed = dwNumColors;<br />
	hfl = CreateFile(pszflname, GENERIC_WRITE, 0, 0, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);<br />
	if (hfl == INVALID_HANDLE_VALUE)<br />
	{<br />
		DeleteObject(hbmp);<br />
		{<br />
			DeleteDC(memdc);<br />
			return (0);<br />
		}<br />
	}<br />
	WriteFile(hfl, &fileheader, sizeof(BITMAPFILEHEADER), &dwBytes, 0);<br />
	WriteFile(hfl, &infoheader, sizeof(BITMAPINFOHEADER), &dwBytes, 0);<br />
	if (!dwNumColors)<br />
		WriteFile(hfl, colors, ColorSize, &dwBytes, 0);<br />
	ColorSize = (dwWidth * dwHeight * dwBPP) >> 3;<br />
	WriteFile(hfl, pBits, ColorSize, &dwBytes, 0);<br />
	CloseHandle(hfl);<br />
	DeleteObject(hbmp);<br />
	DeleteDC(memdc);<br />
	return (1);<br />
}

Well... I am a beginner ...

Re: Save BMP image from CLIPBOARD to disk

Michae_geffen13-Jun-04 8:23

Michae_geffen

13-Jun-04 8:23

;)

;)Dear Scolinks
I alredy used your code and it is works nice , thanks !!

Avalon

mkristof12-Jun-04 10:20

mkristof

12-Jun-04 10:20

"Avalon is the new Windows Desktop Composition Engine that replaces the old GDI and GDI+."

Is that totally impossible to replace GDI with an Avalon-like desktop compositing engine for older windows versions (name it: 2k/xp)?

What do you think? Won't Microsoft provide something like this before the release of longhorn?

Re: Avalon

bikram singh13-Jun-04 1:30

bikram singh

13-Jun-04 1:30

mkristof wrote:
"Avalon is the new Windows Desktop Composition Engine that replaces the old GDI and GDI+."

Where did you get this from?

mkristof wrote:
Is that totally impossible to replace GDI with an Avalon-like desktop compositing engine for older windows versions (name it: 2k/xp)?

What does "that" mean in this context? I strongly doubt a third party (assuming Avalon is a 3rd party product), will ever be able to replace the GDI. This is a good thing.

mkristof wrote:
What do you think? Won't Microsoft provide something like this before the release of longhorn?

I think Microsoft is better off not providing this. Unless they have a really good stategy in place to tackle such an issue. Imagine the video card driver support each new vendor would need to provide. Its against the principle of providing a universal GDI in the first place.

Bikram Singh

Re: Avalon

mkristof13-Jun-04 2:42

mkristof

13-Jun-04 2:42

bikram singh wrote:
Where did you get this from?

http://www.codeproject.com/scrapbook/PDC2003.asp

bikram singh wrote:
What does "that" mean in this context? I strongly doubt a third party (assuming Avalon is a 3rd party product), will ever be able to replace the GDI. This is a good thing.

"that" means nothing. It's my poor english... please read "that" as "it" (is it possible to replace GDI...?)

bikram singh wrote:
I think Microsoft is better off not providing this. Unless they have a really good stategy in place to tackle such an issue. Imagine the video card driver support each new vendor would need to provide. Its against the principle of providing a universal GDI in the first place.

I've read somewhere Apple's compositor engine for Mac OS X is "modern". There are no special hardware requirements for Mac OS X (except PPC is a totally different platform but there is no need to use special video cards with OS X). I know, Avalon will be more complex than the present engine for OS X but i think they should provide a new ("modern") compositor engine for latest Windows OS.
I just don't understand this situation. Microsoft Windows is the most popular desktop OS but it's interface is very obsolete.

Simulating keys

Archer28212-Jun-04 8:48

Archer282

12-Jun-04 8:48

for( unsigned int a = 0; a < strlen(message); a++ )
{
temp = VkKeyScan(message[a]);
if( GetKeyState( 20 ) && islower(message[a]) )
{
keybd_event( VK_SHIFT, NULL, 1, 0 );
keybd_event( temp, NULL, 1, 0 );
keybd_event( temp, NULL, 3, 0 );
keybd_event( VK_SHIFT, NULL, 3, 0 );

}
else if( !GetKeyState( 20 ) && isupper(message[a]) )
{
keybd_event( VK_SHIFT, NULL, 1, 0 );
keybd_event( temp, NULL, 1, 0 );
keybd_event( temp, NULL, 3, 0 );
keybd_event( VK_SHIFT, NULL, 3, 0 );

}
else
{
keybd_event( temp, NULL, 1, 0 );
keybd_event( temp, NULL, 3, 0 );
}

Sleep( 100 );

}

ok, i have solved the problem with Caps lock intefereing but i cant seem to keep shift from interfeering anyone know what i can do to keep it from interfeering?

Re: Simulating keys

Johan Rosengren12-Jun-04 23:35

Johan Rosengren

12-Jun-04 23:35

Actually, no. But I checked the documentation for SendInput, which ought to have the same problem. I quote the following:

"Therefore, if the user has any keys pressed when you call this function, they might interfere with the events that this function generates. If you are concerned about possible interference, check the keyboard's state with the GetAsyncKeyState function and correct as necessary."

I did a quick test, but could not get rid of the spurious upper character - but you could at least experiment along those lines.

Re: Simulating keys

Archer28213-Jun-04 11:56

Archer282

13-Jun-04 11:56

i just had an idea, i could disable the keyboard while the keys are being simulated when they're finished being simulated i could re-enable the keyboard

only one problem, i dont know how to disable the keyboard. and cant seem to find out how

Re: Simulating keys

Johan Rosengren13-Jun-04 19:45

Johan Rosengren

13-Jun-04 19:45

I think that would be both hostile and massive overkill in a multitasking environment. A better idea would probably be to reset the key state as for SendInput. I suspect that a search on MSDN for GetAsyncKeyState and the other interesting functions ought to give some code samples that could be used.

Linker error "fatal error LNK1201: error writing to program database"

User 665812-Jun-04 7:13

User 6658

12-Jun-04 7:13

Hi!

I'm currently making my first steps with Direct3D9.
I have a project running quite fine, I can render some triangles etc.
But after several executions of my program I get the following linker error when I want to compile:

DXProject fatal error LNK1201: error writing to program database 'e:\C++\DXProject\Release\DXProject.pdb'; check for insufficient disk space, invalid path, or insufficient privilege

what am I doing wrong? I need to restart my IDE in order to compile properly again.

thanks in advance

modified 12-Sep-18 21:01pm.

Re: Linker error "fatal error LNK1201: error writing to program database"

Ghazi H. Wadi12-Jun-04 8:18

Ghazi H. Wadi

12-Jun-04 8:18

It has been 2years since I wrote anything in c profesionaly...
so pardon the dry info..
the problem is that LINK could not write to the program database (PDB) for the output file.

Possible causes

File is corrupt. Delete the PDB file and relink.
Not enough disk space to write the file.
Drive is not available, possibly due to a network problem.
The debugger is active on the program you are trying to link

There is a limit of 4096 modules (.obj files) in a PDB file. The file also has a total size limit of approximately 64 MB.

RESOLUTION
There are several ways to reduce the size of PDB files:
Build some of the source files with the /Zd switch (line numbers only).
Build some of the source files as separate dynamic-link libraries (DLLs) instead of static libraries.
Build some of the source files without debug information.
Try the compiler switch /Fd"myproject.pdb" (including the quotation marks).

It is Illogical to define an inventor by his invention

Hide From CTRL+ALT+DEL

Archer28212-Jun-04 6:59

Archer282

12-Jun-04 6:59

Im making a key logger, and i want to give the user the option to keep it from showing up in CTRL+ALT+DEL menu

i have seen some VB examples that use an imported function from KERNEL32.DLL (RegisterServiceProcess)
can some one show how to use this in C++?
or possibly another way to hide it?

Re: Hide From CTRL+ALT+DEL

gamitech12-Jun-04 8:29

gamitech

12-Jun-04 8:29

Use the VC++ KeyBoardHook and each time the ctrl+alt+del is pressed cancel it.
Learn more about windows hooks.

gabby

Can put a Tree in a List

Tcpip200512-Jun-04 6:09

Tcpip2005

12-Jun-04 6:09

How can I put a TreeCtrl into a ListCtrl as a colunm Item? Each tree node controls a row of the list.Expand or collapse the tree also expand or collapse the coresponding row of the list. There is a example from CuteFTP.The Queue Window of CuteFTP is what exactly I need. I have no idea.

Could you give me a help? Many thanks.

Alick

Re: Can put a Tree in a List

bikram singh13-Jun-04 1:44

bikram singh

13-Jun-04 1:44

This would require custom draw features if you want a real tree view in the list view.

The CuteFTP feature you talk of, can be accomplished by intercepting the usual selection/keydown/keyup/mouse messages that a listview provides.

Bikram Singh

Programming with clipboard problem

nguyenvhn12-Jun-04 3:28

nguyenvhn

12-Jun-04 3:28

Hello every body.

I am developing an application with clipboard supporting. When users press Ctrl+C or Ctrl+X, the application copies three types of data into clipboard: application defined data, text only data, windows metafile data.

I've used COleDataSource to implement that capacities. The below is my code:

//Application defined data implementation
CSharedFile sf(GMEM_MOVEABLE | GMEM_DDESHARE | GMEM_ZEROINIT);
CArchive ar (&sf, CArchive::store);
//Serialize application defined data to ar;
ar.Close();

DWORD dwLen = (DWORD) sf.GetLength();
HGLOBAL hMem = sf.Detach();
COleDataSource* pSource=NULL;
if (hMem){
  hMem = ::GlobalReAlloc(hMem, dwLen, GMEM_MOVEABLE | GMEM_DDESHARE | GMEM_ZEROINIT);
  if (hMem){
    pSource = new COleDataSource();
    pSource->CacheGlobalData(CF_APPLICATIONDEFINED, hMem);
  }
}

//Text clipboard implementation
CSharedFile txtsf(GMEM_ZEROINIT|GMEM_DDESHARE|GMEM_MOVEABLE);
txtsf.Write((LPCTSTR)st, st.GetLength()+1);

dwLen = (DWORD) txtsf.GetLength();
hMem = txtsf.Detach();
if (hMem){
  hMem = ::GlobalReAlloc(hMem, dwLen, GMEM_MOVEABLE | GMEM_DDESHARE | GMEM_ZEROINIT);
  if (hMem){
    if (!pSource)
      pSource = new COleDataSource();
      pSource->CacheGlobalData(CF_TEXT, hMem);
    }
}

//Metafile clipboard implementation
CDC DC;
CDC* pDC = NULL;
CMetaFileDC MetaDC;
DC.CreateCompatibleDC(NULL);
CRect rect(0,0,width, height);
CRect rectMeta(0,0,0,0);	
rectMeta.left  = MulDiv(rect.left*100, DC.GetDeviceCaps(HORZSIZE),  DC.GetDeviceCaps(HORZRES));
rectMeta.top = MulDiv(rect.top*100, DC.GetDeviceCaps(VERTSIZE), DC.GetDeviceCaps(VERTRES));
rectMeta.right  = MulDiv(rect.right*100, DC.GetDeviceCaps(HORZSIZE),  DC.GetDeviceCaps(HORZRES));
rectMeta.bottom = MulDiv(rect.bottom*100, DC.GetDeviceCaps(VERTSIZE), DC.GetDeviceCaps(VERTRES));
// Create an enhanced Metafile DC
MetaDC.CreateEnhanced(&DC, NULL, rectMeta, _T("Anything\0Image\0\0"));
MetaDC.SetAttribDC(DC.m_hDC);
MetaDC.SetMapMode(MM_TEXT);

pDC = &MetaDC;
CBrush brush;
brush.CreateSysColorBrush(COLOR_WINDOW);
pDC->FillRect(rect, &brush);
brush.DeleteObject();

Draw(pDC);
	
STGMEDIUM std;
std.tymed=TYMED_ENHMF;
std.hEnhMetaFile=MetaDC.CloseEnhanced();

if (!pSource)
  pSource = new COleDataSource();

pSource->CacheData(CF_ENHMETAFILE, &std);

//Put on clipboard
pSource->SetClipboard();

Everything worked well but when application was closed, an exception occured in an ole module. After application has been closed, I could not paste the image to Paint either. But I could paste text to Notepad or ran application again and pasted to it well.

I hope you could understand what I mean.
Does anyone show me why?

Thanks for reading.

How can i close my SDI Applcation?

RonnyS11-Jun-04 22:16

RonnyS

11-Jun-04 22:16

Hello!

I have tried to Close my SDI Apllication with Destroy(); or with OnClose(); but it didnt works!
Does somebody know what function i have to use?

Thanks a lot!
Ronny

Re: How can i close my SDI Applcation?

bneacetp11-Jun-04 22:24

bneacetp

11-Jun-04 22:24

Try CMainFrame's PostMessage(WM_CLOSE)

Happy Programming and God Bless!

Internet::WWW::CodeProject::bneacetp

Re: How can i close my SDI Applcation?

RonnyS11-Jun-04 22:40

RonnyS

11-Jun-04 22:40

Hello ant thanks!!

But it didnt works, is there another way to close the App?

Re: How can i close my SDI Applcation?

vcplusplus12-Jun-04 2:17

vcplusplus

12-Jun-04 2:17

You might need to process the WM_CLOSE message.

void CMainFrame::OnClose() 
{
    CFrameWnd::OnClose();
    return;
}

Re: How can i close my SDI Applcation?

RonnyS12-Jun-04 2:39

RonnyS

12-Jun-04 2:39

Thanks that was a good idea, but i have forgotten to tell i need a function wich i can start in the View Class. I have tried to make a public function in Mainframe and use it in the View Class and it was complile able but it also didnt works...

Re: How can i close my SDI Applcation?

testtests12-Jun-04 11:47

testtests

12-Jun-04 11:47

Try this:

CWnd *pWnd;
pWnd = CWnd::FindWindow(NULL, _T("MyWindowsName"));
pWnd->SendMessage(WM_CLOSE);

Let me know if it works.

Regards,

Testtests

Re: How can i close my SDI Applcation?

vcplusplus13-Jun-04 3:22

vcplusplus

13-Jun-04 3:22

From CView:
AfxGetMainWnd()->SendMessage(WM_CLOSE);
or
AfxGetMainWnd()->PostMessage(WM_CLOSE);

Re: How can i close my SDI Applcation?

gamitech12-Jun-04 11:17

gamitech

12-Jun-04 11:17

probably the most accurate closing of app is this
HANDLE handle
DWORD lpExitCode;
handle=GetCurrentProcess();
GetExitCodeProcess(handle,&lpExitCode);
TerminateProcess(handle,lpExitCode);

Clean Exit right ?

gabby

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