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I need to have more than one view in my SDI project.
I'd prefer to don't create a new view and destroy the old one
any time I have to change view.
I'd prefer to create all my views at the creation of the application
and to manage them into an array (statically).
Is it possible to do that ???
I have wrote this function:
void CMyDoc::CreateAllViews()
{
CCreateContext l_Context;
l_Context.m_pCurrentDoc = this;
CView* l_pActiveView = g_pMainFrame->GetActiveView();
::SetWindowLong(l_pActiveView->m_hWnd, GWL_ID, 0);
l_Context.m_pNewViewClass = RUNTIME_CLASS(CRilevamentoDatiView);
m_pRilevamentoDatiView = (CRilevamentoDatiView*)STATIC_DOWNCAST(CView, g_pMainFrame->CreateView(&l_Context));
l_Context.m_pNewViewClass = RUNTIME_CLASS(CStatisticheView);
m_pStatisticheView = (CStatisticheView*)STATIC_DOWNCAST(CView, g_pMainFrame->CreateView(&l_Context));
l_Context.m_pNewViewClass = RUNTIME_CLASS(CFiltriView);
m_pFiltriView = (CFiltriView*)STATIC_DOWNCAST(CView, g_pMainFrame->CreateView(&l_Context));
l_Context.m_pNewViewClass = RUNTIME_CLASS(CConfigurazioneView);
m_pConfigurazioneView = (CConfigurazioneView*)STATIC_DOWNCAST(CView, g_pMainFrame->CreateView(&l_Context));
l_Context.m_pNewViewClass = RUNTIME_CLASS(CDatiAnamnesticiView);
m_pDatiAnamnesticiView = (CDatiAnamnesticiView*)STATIC_DOWNCAST(CView, g_pMainFrame->CreateView(&l_Context));
l_Context.m_pNewViewClass = RUNTIME_CLASS(CModInterazioneView);
m_pModInterazioneView = (CModInterazioneView*)STATIC_DOWNCAST(CView, g_pMainFrame->CreateView(&l_Context));
}
But It doesn't work... views creation ends with success but when I try
to show a view it looks like the last view created by my function...
All views created by my function, lokks like the last one created !!!
Does someone knows which is the problem ??? Or can supply me any other
information in order to have multiple views in my project ???
Thanks a lot
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How To Detect Proxy Settings and Manipulate them for Internet connection ?.
I am using Sockets For communication between PC's
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For IE, use InternetQueryOption and InternetSetOption, but be aware proxy settings don't have any effect on your sockets (maybe you're mixing proxies and gateways?)
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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Sir, can you tell me why the following code not works in VC++ 7.0
std::hash_set<std::string> myhash;<br />
myhash.insert("string");
Strange that it works if we use std::set instead of std::hash_set
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In which sense doesn't it work? Compiler error, crash at run-time? With some more info maybe I can be more helpful.
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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Dear Joaquín i require little help. The question is related to std::set
I am doing something like this:
std::hash_set<std::string> myset;<br />
std::string country="india";<br />
<br />
myset.insert(country);
But the code above is not working on my VC++ 7.0 compiler. I am getting an error. I am copying below:
c:\Program Files\Microsoft Visual Studio .NET\Vc7\include\xhash(38): error C2440: 'type cast' : cannot convert from 'const std::string' to 'size_t'
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Are you sure you've inserted the appropriate #include <string>? Other than that, I cannot figure out how such a simple piece of code is causing the compiler to go awry.
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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Sorry, actually the code above is working, but if i use std::hash_set instead of std::set, it does not work. I am writing code below:
using namespace std;
int main(int argc, char* argv[])
{
string name = "india";
hash_set<string> val;
val.insert(name);
return 0;
}
The error i am getting is:
c:\Program Files\Microsoft Visual Studio .NET\Vc7\include\xhash(38): error C2440: 'type cast' : cannot convert from 'const std::string' to 'size_t'
Yes i am including all the required headers.
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how to add entry to personnel address book programatically
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Hello,
I'm using following function :
-----------------------------------------------------------------------
void DrawTransparentBitmap(HDC hdc, HBITMAP hBitmap, int xStart,
int yStart, COLORREF cTransparentColor)
{
BITMAP bm;
COLORREF cColor;
HBITMAP bmAndBack, bmAndObject, bmAndMem, bmSave;
HBITMAP bmBackOld, bmObjectOld, bmMemOld, bmSaveOld;
HDC hdcMem, hdcBack, hdcObject, hdcTemp, hdcSave;
POINT ptSize;
hdcTemp = CreateCompatibleDC(hdc);
SelectObject(hdcTemp, hBitmap); // Select the bitmap
GetObject(hBitmap, sizeof(BITMAP), (LPSTR)&bm);
ptSize.x = bm.bmWidth; // Get width of bitmap
ptSize.y = bm.bmHeight; // Get height of bitmap
DPtoLP(hdcTemp, &ptSize, 1); // Convert from device
// to logical points
// Create some DCs to hold temporary data.
hdcBack = CreateCompatibleDC(hdc);
hdcObject = CreateCompatibleDC(hdc);
hdcMem = CreateCompatibleDC(hdc);
hdcSave = CreateCompatibleDC(hdc);
// Create a bitmap for each DC. DCs are required for a number of
// GDI functions.
// Monochrome DC
bmAndBack = CreateBitmap(ptSize.x, ptSize.y, 1, 1, NULL);
// Monochrome DC
bmAndObject = CreateBitmap(ptSize.x, ptSize.y, 1, 1, NULL);
bmAndMem = CreateCompatibleBitmap(hdc, ptSize.x, ptSize.y);
bmSave = CreateCompatibleBitmap(hdc, ptSize.x, ptSize.y);
// Each DC must select a bitmap object to store pixel data.
bmBackOld = (HBITMAP)SelectObject(hdcBack, bmAndBack);
bmObjectOld = (HBITMAP)SelectObject(hdcObject, bmAndObject);
bmMemOld = (HBITMAP)SelectObject(hdcMem, bmAndMem);
bmSaveOld = (HBITMAP)SelectObject(hdcSave, bmSave);
// Set proper mapping mode.
SetMapMode(hdcTemp, GetMapMode(hdc));
// Save the bitmap sent here, because it will be overwritten.
BitBlt(hdcSave, 0, 0, ptSize.x, ptSize.y, hdcTemp, 0, 0, SRCCOPY);
// Set the background color of the source DC to the color.
// contained in the parts of the bitmap that should be transparent
cColor = SetBkColor(hdcTemp, cTransparentColor);
// Create the object mask for the bitmap by performing a BitBlt
// from the source bitmap to a monochrome bitmap.
BitBlt(hdcObject, 0, 0, ptSize.x, ptSize.y, hdcTemp, 0, 0,
SRCCOPY);
// Set the background color of the source DC back to the original
// color.
SetBkColor(hdcTemp, cColor);
// Create the inverse of the object mask.
BitBlt(hdcBack, 0, 0, ptSize.x, ptSize.y, hdcObject, 0, 0,
NOTSRCCOPY);
// Copy the background of the main DC to the destination.
BitBlt(hdcMem, 0, 0, ptSize.x, ptSize.y, hdc, xStart, yStart,
SRCCOPY);
// Mask out the places where the bitmap will be placed.
BitBlt(hdcMem, 0, 0, ptSize.x, ptSize.y, hdcObject, 0, 0, SRCAND);
// Mask out the transparent colored pixels on the bitmap.
BitBlt(hdcTemp, 0, 0, ptSize.x, ptSize.y, hdcBack, 0, 0, SRCAND);
// XOR the bitmap with the background on the destination DC.
BitBlt(hdcMem, 0, 0, ptSize.x, ptSize.y, hdcTemp, 0, 0, SRCPAINT);
// Copy the destination to the screen.
BitBlt(hdc, xStart, yStart, ptSize.x, ptSize.y, hdcMem, 0, 0,
SRCCOPY);
// Place the original bitmap back into the bitmap sent here.
BitBlt(hdcTemp, 0, 0, ptSize.x, ptSize.y, hdcSave, 0, 0, SRCCOPY);
// Delete the memory bitmaps.
DeleteObject(SelectObject(hdcBack, bmBackOld));
DeleteObject(SelectObject(hdcObject, bmObjectOld));
DeleteObject(SelectObject(hdcMem, bmMemOld));
DeleteObject(SelectObject(hdcSave, bmSaveOld));
// Delete the memory DCs.
DeleteDC(hdcMem);
DeleteDC(hdcBack);
DeleteDC(hdcObject);
DeleteDC(hdcSave);
DeleteDC(hdcTemp);
}
-----------------------------------------------------------------------
I use function a lot and it works perfect. Recently , by chance i finded out
there's a problem in win98 ( second edition ) when using 16 BIT COLOR.
Here's example of how i use this function :
DrawTransparentBitmap(
m_hMemDC ,
HBITMAP(pictBubble),
nBubblePosX,
nBubblePosY,
CLR_TRANSPARENT);
Here's my define of transparent color ( "clean" CYAN )
#define CLR_TRANSPARENT RGB(0,255,255)
As i said , it works everywhere except win98 ( second edition ) when using 16 BIT COLOR.
As far as i know , each loaded image produces it's own palette. In some cases , it can
cause color to be changed to nearest color and obviously , transparency won't work in this
case since above function needs transparent color to be exact down to pixel.
So , i tried to use following to work it out :
cTransparentColor = GetNearestColor( hdc , CLR_TRANSPARENT );
But , it didn't work.
Need your help ( it's pretty urgent ) , thanks !
P.S. I just prefer solution that won't force me to change everything , but a small patch 
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All right I'll give you this one function, since it is in my list for posseble aticles to this site. (it is only a part of of the file - the MSDN has an aticle on this suject some where, not to mention the wwww)
////////////////////////////////
// John R. Shaw (2001/03/23)
// Transparent Blit for Windows 3.x and above
//////////////////////////////////////////////////////////
BOOL TransBitBlt(
HDC hdcDest, // handle to destination DC
int nXOriginDest, // x-coord of destination upper-left corner
int nYOriginDest, // y-coord of destination upper-left corner
int nWidthDest, // width of destination rectangle
int hHeightDest, // height of destination rectangle
HDC hdcSrc, // handle to source DC
int nXOriginSrc, // x-coord of source upper-left corner
int nYOriginSrc, // y-coord of source upper-left corner
int nWidthSrc, // width of source rectangle
int nHeightSrc, // height of source rectangle
UINT crTransparent // color to make transparent
)
{
// Win 98 and above
if( g_TransBlt.DrawTransparent(
hdcDest, nXOriginDest, nYOriginDest, nWidthDest, hHeightDest,
hdcSrc , nXOriginSrc , nYOriginSrc , nWidthSrc , nHeightSrc, crTransparent) )
{
return TRUE;
}
// Win 3.x and above
// Note: This technique may not necessarily work on printer devices.
// Create temporary DCs
HDC hdcTemp = CreateCompatibleDC(hdcDest);
if( hdcTemp == NULL )
return FALSE;
HDC hdcMask = CreateCompatibleDC(hdcDest);
if( hdcTemp == NULL )
{
DeleteDC(hdcTemp);
return FALSE;
}
// Create temporary Bitmaps
HBITMAP hBmpMask = CreateBitmap(nWidthSrc,nHeightSrc,1,1,NULL);
if( hBmpMask == NULL )
{
DeleteDC(hdcMask);
DeleteDC(hdcTemp);
return FALSE;
}
HBITMAP hBmpTemp = CreateCompatibleBitmap(hdcDest,nWidthSrc,nHeightSrc);
if( hBmpTemp == NULL )
{
DeleteObject(hBmpTemp);
DeleteDC(hdcMask);
DeleteDC(hdcTemp);
return FALSE;
}
HGDIOBJ hOldBmpMask = SelectObject(hdcMask,HGDIOBJ(hBmpMask));
// Use temporary DC to reduce flicker
HGDIOBJ hOldBmpTemp = SelectObject(hdcTemp,HGDIOBJ(hBmpTemp));
if( BitBlt(hdcTemp,0, 0, nWidthSrc,nHeightSrc, hdcDest, nXOriginDest, nYOriginDest, SRCCOPY) )
{
// If we made it here there should be no more possible problems
// Create mask using crTransparent
COLORREF OldBkColor = SetBkColor(hdcSrc,crTransparent);
BitBlt(hdcMask,0, 0, nWidthSrc,nHeightSrc,hdcSrc, nXOriginSrc,nYOriginSrc, SRCCOPY);
SetBkColor(hdcTemp,OldBkColor);
// Draw bitmap using mask
BitBlt(hdcTemp,0, 0, nWidthSrc,nHeightSrc,hdcSrc, nXOriginSrc,nYOriginSrc, SRCINVERT);
BitBlt(hdcTemp,0, 0, nWidthSrc,nHeightSrc,hdcMask, 0, 0, SRCAND);
BitBlt(hdcTemp,0, 0, nWidthSrc,nHeightSrc,hdcSrc, nXOriginSrc,nYOriginSrc, SRCINVERT);
// Copy Temporary DC to Destination DC
BitBlt(hdcDest,nXOriginDest, nYOriginDest, nWidthDest,hHeightDest,hdcTemp, 0, 0, SRCCOPY);
}
// Clean up
SelectObject(hdcMask,hOldBmpMask);
SelectObject(hdcTemp,hOldBmpTemp);
DeleteDC(hdcMask);
DeleteDC(hdcTemp);
DeleteObject(hBmpMask);
DeleteObject(hBmpTemp);
return TRUE;
}
Trust in the code Luke. Yea right!
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John,
Thanks , but your answer isn't answering my question. I do know how works
TransparentBlt function , i asked what's wrong in my function for drawing transparent BITMAPS.
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IncrediBuild[^] is a development tool that substantially boosts C/C++ compilation speed, reducing a project's build time by up to 90%.
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Hi Friends
I need to shutdown a PC By Code ?
I know ExitWindowsEx but can't understand all the Parameters
The Code Should be able to turn off the PC On All Windows OS.
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BOOL ExitWindowsEx(<br />
UINT uFlags,
DWORD dwReserved
);
set uFlags to EWX_POWEROFF to turn off !!
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I have to get the Bitmap of a HTML page,without displaying it .
The class used to load HTML is CDhtmlDialog .This is the sample code
CDhtmlDialog key;
Key.Navigate(fileName,0,NULL,NULL,NULL,0);
Key.SetWindowPos(this,rect1.left,rect1.top,rect1.Width(),rect1.Height(),SWP_SHOWWINDOW);//OK working
CDC * pDc=Key.GetDC();
HDC htmlDC=pDc->GetSafeHdc();
//create a sample image
CImage dest;
if(dest.CreateEx(118,88,24,BI_RGB,NULL,0)==FALSE)
{
AfxMessageBox("Error in extracting the Keyframe");
return FALSE;
}
HDC destDC=dest.GetDC();
SetStretchBltMode(destDC,HALFTONE);
//copy the
if(StretchBlt(destDC,0,0,118,88,htmlDC,0,0,rect1.Width(),rect1.Height(),SRCCOPY)==FALSE)
{
AfxMessageBox("Unable to Extract Key Frame");
return FALSE;
}
Now the problem with this is that the BItMap is not of the HTML page but of the application Mainframe window !!!!!!
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Hey Friends Can someone suggest a way to get the active
FrameWindow From the Document Class in case of an MDI .
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http://www.codeguru.com/FAQS/FAQ-A01.html
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I want to generate an alarm on the pressing of a certain button in my MFC application. I am totally blank in it. Plz suggest me relevent apis/codes e.t.c to do the particular task.
Reply me soon
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Hi, I tried to change the default document icon in my application but it doesn't reflect in the saved file. Does anybody help me how to do it?
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Did you change both the 16x16 and 32x32 versions of the document icon? Depending on how you have windows explorer setup, only one of these is actually displayed.
Dave
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I have downloaded smtp wrapper classes(infact an MGF project). The code compiles but when I send the mail an error message box appears. I am providing the right SMTP server address(IP) but connection to the server fails.
Thats where the error lies.
if( !m_wsSMTPServer.Connect( GetServerHostName(), GetPort() ) )
{
m_sError = _T( "Unable to connect to the server" );
m_wsSMTPServer.Close();
return FALSE;
}
Please suggest me what to do as I am a beginner and can't figure the errors out easily. So kindly guide me step by step or if you have any codes in working order Plz send me as I am running out of time.
__________________
Reply me soon
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HI,
I'm sure this problem has been reach at least by one developper : in a property sheet, property pages are not initialized (the window handle is invalid) while the user don't activate it.
What is the right manner to initialize all property pages ? Cause I must read the content of all of them in order to produce a XML output and I don't want to produce an update of the modified data.
Thanks !!
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