Re: Metafile output on Win98 problem - C / C++ / MFC Discussion Boards

The WM_CTLCOLORLISTBOX message is sent to the parent window of a list box before the system draws the list box. WM_CTCOLOREDIT too. By responding to this message, the parent window can set the text and background colors of the list box by using the given display device context handle.

WM_CTLCOLORLISTBOX
hdcLB = (HDC) wParam;// handle to list box display context
hwndLB = (HWND) lParam; // handle to list box

This is for 32 bit only for 16 you have just WM_CTLCOLOR and then need to switch on the WPARAM

Hi,

I still unable to figure out the process of registration of my components via Browser. Can you give me the more details how can do this?? May be little bit example.

Hi!

You have to package your component and the best way to do this is to use the CAB files. In the .INF file of the package you will be able to specify which controls the browser should register. All this information is IE related I'm not sure how it will work in Netscape Navigator.

See more details in the MSDN article "Packaging ActiveX Controls".

Regards,
Alex Gorev,
Dundas Software.

I would like to use the function IDataInitialize::LoadStringFromStorage that takes LPCOLESTR as parameters. The first parameters is a udl file and I have that file in a char*. How to past from my char* to the LPCOLESTR? The second parameter is a LPCOLESTR* how can I get that back to char*?

Thanks.

Hi!

You can use the A2OLE macro to convert the char* string to LPCOLESTR. To get the string back you have to specify the valid pointer to LPCOLESTR and then you can convert the result Unicode string to char*. I don't know who is responsible for allocating memory for the result, so if you have to do that you can create an array of WCHARs.

You can find more information about the "String Conversion Macro" in the MSDN.

Regards,
Alex Gorev,
Dundas Software.

Hi,
Use AnsiToUnicode( )
&
UnicodeToAnsi()

here are two examples
OPENFILENAME ofn;
LPOLESTR pszFileNameW;
LPMONIKER pmk;
..
......
// Get file name from OpenFile Common Dialog. The ANSI file name will
// be placed in ofn.lpstrFile
GetOpenFileName(&ofn);
..
......
AnsiToUnicode(ofn.lpstrFile, &pszFileNameW);
CreateFileMoniker(pszFileNameW, &pmk);
CoTaskMemFree(pszFileNameW);
..
......
COleInPlaceFrame::SetStatusText(LPCOLESTR pszStatusTextW)
{

LPSTR pszStatusTextA;
UnicodeToAnsi(pszStatusTextW, &pszStatusTextA);
SetWindowText(m_hwndStatus, pszStatusTextA);
CoTaskMemFree(pszStatusTextA);
}

See Also OLE2CT()

Hope That will help
Ghazi

I'm creating simple WMFs (Aldus and non-Aldus) by doing a simple StretchDIBits with a DIB i've created myself. i know the DIB is valid because a) if i draw it to the screen, it looks fine, and b) the code works on NT, Win2K and, i think, 95.

when i create these metafiles in Win98, however, the image is shifted to the right 20 (i haven't measured) pixels or so - what should be the left edge of the image appears about 20 pixels from the displayed left edge, and, the colors are wrong on the part of the image to the right of the real left edge (the components are swapped, apparently).

it sounds like the DIB is wrong, but i know it's not.

also, i've tried doing this with an HBITMAP and BitBlt, with the same results.

more info....

if i open these WMFs in PSP 6, they look fine. if i view them with ACDSee or the Win98 Explorer, they have the offset problem.

if i read it into PSP6, then resave, the new WMF looks fine in ACDSee, Win98's Explorer and PSP.

i'm stumped.

are there tricks to saving WMFs that aren't documented?????

any info is appreciated.

-c

// use the screen DC
HDC dc = ::GetDC(NULL);
if (dc!=NULL)
{
// calculate output rect....
....

HDC hMetaDC = ::CreateEnhMetaFile(dc, NULL, &rect, "");
if (hMetaDC!=NULL)
{

// map mode junk
SetMapMode(hMetaDC, MM_ANISOTROPIC);
SetWindowExtEx(hMetaDC, iDPIX, iDPIY, NULL);
SetViewportExtEx(hMetaDC, iDPIX, iDPIY, NULL);

BITMAPINFO bmInfo = *(LPBITMAPINFO)pDIB ;

// this function uses generic 24bit DIBs, only. i know this
// because i generate them myself.

LPVOID lpDIBBits = (LPVOID)(pDIB + bmInfo.bmiHeader.biSize);

UINT32 lines = ::StretchDIBits(hMetaDC,
0,0,
width, height,
0,0,
width, height,
lpDIBBits,
&bmInfo,
DIB_RGB_COLORS,
SRCCOPY);

HENHMETAFILE hMeta = ::CloseEnhMetaFile(hMetaDC);

// How big will the metafile bits be?
UINT32 dwSize = GetWinMetaFileBits( hMeta, 0, NULL,
MM_ANISOTROPIC, dc );

if (dwSize!=0)
{
// Allocate that much memory
ISByteArray bitBuf(dwSize);
BYTE *pBits = (BYTE *)bitBuf;

// Let windows convert the enhanced metafile to a 16
windows metafile
GetWinMetaFileBits( hMeta, dwSize, pBits, MM_ANISOTROPIC,
dc );

// Write the metafile bits
io.WriteBuf(pBits, dwSize);
}

::DeleteEnhMetaFile(hMeta);

}

::ReleaseDC(NULL, dc);
}

Chris,

Had the same problem. It's a memory alignment thing. (prints fine on NT but had a problem on 95/98)
Sorry to mail a bulk of code like this.

Cheers,

GBO.
---
// Try something like this:
// excerpt from my GO++ extension code.
// I do not load the MetaFile from file, but from memory
// (it is embedded in my DLLs)
BOOL CGoSchemeMetaPict::DrawObject(CDC* pDC)
//:draw this metafile
{
if (!CGoObject::IsVisible()) return TRUE;

// allow for the MetaFileName() function to be overriden and actually
// change the name behind our backs!

if (myResID == 0)
{
TRACE0("CGoMetaFile with no ResourceID\n");
CGoObject::DrawObject(pDC); // call the base class default draw
return TRUE;
}

CGoAppMixIn* theApp = (CGoAppMixIn*) AfxGetApp();
CGoView* pView;
if (m_pDocument) pView = m_pDocument->GetCurrentDrawView();
else pView = m_pView;
int nScale = 100;
if (pView) nScale = pView->GetScale();

// only use the bitmap cache if the scale factor is 1:1 or smaller. If we are
// scaling things larger, draw the metafile directly.
CRect devRect = GetBoundingRect();
/* if (bPrintPreview)
{
CDC* pATC = CDC::FromHandle(pDC->m_hAttribDC);
pATC->LPtoDP(&devRect);
}
else
{
pDC->LPtoDP(&devRect);
}
*/ //GBO: does not work now ??

// for Win32 functions
HDC hDCDrawSurf = pDC->GetSafeHdc( );
LPENHMETAHEADER pemh;

if (hEnhMetaFile == NULL)
{
HRSRC HResourceInfo =
::FindResource( HCallingModule, // module handle
MAKEINTRESOURCE(myResID), // pointer to resource name
(LPCSTR) "WMFRES" // pointer to resource type
);
if (HResourceInfo == NULL)
{
DWORD error = ::GetLastError();
_ASSERT(NULL);
AfxMessageBox("HResourceInfo == NULL for MetaFileResource!");
return FALSE;
}
HGLOBAL HData = LoadResource( HCallingModule, // resource-module handle
HResourceInfo // resource handle
);
if (HData == NULL)
{
DWORD error = ::GetLastError();
_ASSERT(NULL);
AfxMessageBox("HData == NULL for MetaFileResource!");
return FALSE;
}

void* pMapFile = HData;
pemh = (LPENHMETAHEADER) HData;
DWORD uiSize = 0;

// CHECK FOR WMF FORMAT
//
// If it has an ALDUS header skip it
// Notice: APMSIZE is used because the HANDLE and RECT of the structure
// depends on the environment
//
if (*((LPDWORD)pemh) == ALDUS_ID)
{
ALDUSMFHEADER *pAldusMFHeader;
METAHEADER *pMFHeader; // Set pointers on the resource bloc
pAldusMFHeader=(ALDUSMFHEADER *) HData; // Points to the beginning of ALDUS METAHEADER
pMFHeader=(METAHEADER *)(pAldusMFHeader+1); // Points to the beginning of METAHEADER
// the Pointer + 1 -> 4 bytes further
// these 4 bytes == ALDUS_ID
// Keeps a copy of the ALDUSMETAHEADER
memcpy(&m_AldusMFHeader,pAldusMFHeader,sizeof(ALDUSMFHEADER));
_ASSERT(pMFHeader->mtType == 1); // in memory!
hEnhMetaFile = ::SetWinMetaFileBits(
pMFHeader->mtSize * 2L, // was 2?
// is size in WORDS
// Unsigned word (= 16 bits or 2 bytes).
(const unsigned char*)pMFHeader,//m_pMFBits,
NULL, //hDCDrawSurf, // was NULL
NULL);

if (hEnhMetaFile == NULL)
{
DWORD error = ::GetLastError();
_ASSERT(NULL);
CString errorrep(_T(""));
char temp[48];
::ZeroMemory(temp, 48);
_itoa(error, temp, 10);
errorrep = CString("UNSUPPORTED FORMAT or SEVERE ERROR for MetaFileResource! Error = ");
errorrep += CString(temp);
errorrep += CString("\nuiSize*2L = ");
_itoa(uiSize*2L, temp, 10);
errorrep += CString(temp);
errorrep += CString("\nhDCDrawSurf = ");
_itoa( (__int32) hDCDrawSurf, temp, 10);
errorrep += CString(temp);
AfxMessageBox(errorrep);
// UNSUPPORTED FORMAT
return FALSE;
}
}
else
{
// CHECK FOR EMF FORMAT
uiSize = pemh->nBytes;

hEnhMetaFile = ::SetEnhMetaFileBits (
uiSize, // buffer size
(PBYTE)pMapFile+pemh->offDescription+pemh->nDescription // buffer that contains enhanced metafile data
);
if (hEnhMetaFile == NULL)
{
DWORD error = ::GetLastError();
_ASSERT(NULL);
char temp[48];
::ZeroMemory(temp, 48);
_itoa(error, temp, 10);
CString errorrep("UNSUPPORTED FORMAT or SEVERE ERROR for MetaFileResource! Error = ");
errorrep += CString(temp);
AfxMessageBox(errorrep);
// UNSUPPORTED FORMAT
return FALSE;
}
}
}

int saved = pDC->SaveDC();

// TODO: add draw code for native data here
if (hEnhMetaFile != NULL)
{
BOOL Answer = ::PlayEnhMetaFile(hDCDrawSurf, hEnhMetaFile, &devRect );
if (Answer != TRUE)
{
DWORD error = ::GetLastError();
_ASSERT(NULL);
AfxMessageBox("PlayEnhMetaFile Failed for MetaFileResource!");
}
}
else
{
_ASSERT(NULL);
AfxMessageBox("hEnhMetaFile == NULL && hMetaFile == NULL for MetaFileResource!");
}

pDC->RestoreDC(saved); // reset DC

return TRUE;
}

I have a foxpro component that take two VARIANT* as parameters. How do I populate these two parameters and
call IDispatch::....?

Well it depends on what you want to put in the variant... but first you would do something like this...

VARIANT v1,v2;
VariantInit(&v1);
VariantInit(&v2);

then depending on what you are putting in there you have to fill in the vt...

v1.vt = VT_BSTR; // for a bstr
v1.vt = VT_I2; // for an int
v1.vt = VT_I4; // for a long etc...

then you would call your method

yourobj->yourmethod(&v1,&v2);

Hi:I try to call function from other classes in here and get some problem.
All the necessary include files I put already.
I have the following functions that I want to call on other class. MY QUESTION
IS HOW TO IMPLEMENT THESE FUNCTIONS ON OTHER CLASS... SEE MY PSEUDOCODE....
I try some of them but mostly not working.
1) istream& loser.ReadFrom(istream& in, char* format ) ; --->read from cin
2) bool Ticket::Search( int* array, int item ,int elementsInArray );--> search
how many balls are matched
3) Ticket HistoryFile::GetMatch( Ticket& searchItem ); --> see if the date
of cin and from the file is match
the pseudocode to call those functions to other class:
read from cin -->istream& loser.ReadFrom(istream& in, char* format )
see if the date match --> Ticket HistoryFile::GetMatch( Ticket& searchItem);
if date on cin & date on file is same ---->if (ticket == ticket &);
match how many balls are match -->bool Ticket::Search( int*
array, int item ,int elementsInArray ); cout << "You match : " << ;else
null ticket ---> ticket.ticket( );endifThe following is my code:
void Pureluck::Run( ){
istream& loser.ReadFrom( ); --> //will give me this error
Error: PURELUCK.H(92,24):Too few parameters in call to 'Ticket::ReadFrom(istream
&,char *)'
then if I put --> loser.ReadFrom(istream &, char * ); //---> will give me
this errorError: PURELUCK.H(92,29):Improper use of typedef 'istream'
all the rest of message are mostly: Expression syntax.
winners.GetMatch( loser& searchItem ); //search for match date
if (ticket == searchItem) // if found match {
Ticket::Search( int* array, int item ,int elementsInArray )//find
out how many match } else {
Ticket::Ticket( ); //not found become null ticket }
endif; */}//endfn RunPlease let me knowThank's

Hi,

How do I display the same Property Sheet that is shown when we select 'Properties' from the context menu on a file in Windows Explorer. I want to display the properties of a file, but do not want to create a dialog template of my own and populate the dialog with all the information. I want to reuse the resource that Explorer uses. Is this possible?

Thanks in advance,
Magesh

Call ShellExecute() on the file, with a verb of "properties"

--Mike--

I tried the following code fragment from the WM_LBUTTONDOWN handler of an SDI app

ShellExecute(this->GetSafeHwnd(), "properties", "c:\\temp\\sharedfile.txt", NULL, "c:\\temp", SW_SHOW);

This call returns the error code SE_ERR_NOASSOC (0x1f) and does not display the property sheet for the file. What's wrong with this code?

I tried the following code fragment from the WM_LBUTTONDOWN handler of an SDI app

ShellExecute(this->GetSafeHwnd(), "properties", "c:\\temp\\sharedfile.txt", NULL, "c:\\temp", SW_SHOW);

The file exists in the specified directory.

This call returns the error code SE_ERR_NOASSOC (0x1f) and does not display the property sheet for the file. What's wrong with this code?

Dear Magesh,

In the forum, you posted:

"This call returns the error code SE_ERR_NOASSOC (0x1f) and does not display the property sheet for the file. What's wrong with this code?"

I'm not sure, but I think that the "properties" and some other new verbs are only available on Windows 2000. The only ones available for Windows 95/98/NT are "open" "explore" and "print." (I think.) Smile | :)

Cheers,
Brian Hart

I want remove caption bar in Toolbar(Floating).

I try to modify stlyle of Toolbar with ModifyStyle() method

but, failed.

ModifyStyle( WS_CAPTION, NULL ) -> this is I called Method

Thanks for reading this message!

When the toolbar is floating there are in fact 3 (three!) windows on top of each other.
The first one is a CMiniDockFrameWnd, the second one is a CDockBar, and finaly there is the CToolBar.
So you cannot change the style of the miniframe by calling ModifyStyle for the toolbar. In fact, it is also very complicated to remove the miniframe's caption.
If you really need this, in my article "CSizingControlBar..." in the Docking Windows section here, you will find how to do it, but be warned: this is a side feature in that library, and I didn't documented it.

How to put selected color(Not certain whether to use resources or some other way) in to CListCtrl's second column. The selected color should be from CColorPicker(combo like CColorDialog).

Check out this article of mine:

http://www.codeproject.com/listctrl/lvcustomdraw.asp

Hello All !

I want to write an application use ActiveX, but I do not want insert in Dialog. And I think that to do this by two way:

1. Use dialog and insert ActiveX normal, but set Dialog for hide. (Application base on Dialog, only one Dialog)

2. Maybe use only ActiveX in project ?!

Need some help. Thank you very much!

Hello!

Here is a way to do it.

1- Add the ActiveX to your project and you will get a .h and .cpp file that descripes the control.

2- Let us say the class is CMyCoontrol

CMyControl ctrlActiveX;
if(!ctrlActiveX.Create(NULL, WS_CHILD, CRect(0,0,0,0),
AfxGetApp ()->GetMainWnd(), WM_USER + 9999, NULL,
FALSE, NULL))
{
AfxMessageBox("Could not create object");

return FALSE;
}
// Control is created successfully do your work here
......

Hi just add the ActivX to your project (Project / Add to project / Components / ActiveX. This will create a cpp and a header file and you can just call Create(..).
No need for a dialog at all.
Kurt

Is there any way of printing an adobe pdf file using vc++ 6.0?

Any response any one can give me will be greatly appreciated.

Sincerely,
Erich J. Ruth

I have been posting answers in CodeGuru and now I want to become a frequenter of CodeProject.

--Anthony Mai