C / C++ / MFC

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Re: MFC application does not open up Marc Soleda5-Oct-05 21:58 Marc Soleda 5-Oct-05 21:58  Does it reach the constructor of the app? Marc Soleda. ... she said you are the perfect stranger she said baby let's keep it like this... Tunnel of Love, Dire Straits. Re: MFC application does not open up Boaz V5-Oct-05 22:42 Boaz V 5-Oct-05 22:42  Nope. Re: MFC application does not open up vikas amin5-Oct-05 22:26 vikas amin 5-Oct-05 22:26  press F10 u will go to extern "C" int WINAPI _tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow) { // call shared/exported WinMain return AfxWinMain(hInstance, hPrevInstance, lpCmdLine, nCmdShow); } no press F10 again and then F11 to go to the defination of afxwinmain check out the afxwinmain function in "Winmain.cpp" by pressing "F10" find out from which function call the program exit int AFXAPI AfxWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow) Vikas Amin Embin Technology Bombay vikas.amin@embin.com Re: MFC application does not open up Boaz V5-Oct-05 22:44 Boaz V 5-Oct-05 22:44  No help. Pressing f10 or f11 does not reach anywhere. Again, it seems it starts (the layout of the VS changes) and it immediattly returns with return number 0xff. Re: MFC application does not open up Boaz V5-Oct-05 22:59 Boaz V 5-Oct-05 22:59  Found my error. A simple bug in some other lib i used. But, i could find it after i added breakpoints to ALL the functions used in the solution. Is there any simple way to debug an application from the first instruction? Re: MFC application does not open up Marc Soleda5-Oct-05 23:26 Marc Soleda 5-Oct-05 23:26  Adding a breakpoint at the declaration of the global app object? CYourApp theApp; ... she said you are the perfect stranger she said baby let's keep it like this... Tunnel of Love, Dire Straits. Re: MFC application does not open up vikas amin5-Oct-05 23:40 vikas amin 5-Oct-05 23:40  Sorry No idea regarding that Vikas Amin Embin Technology Bombay vikas.amin@embin.com How to change the Icon of my EXE ? Amarelia5-Oct-05 20:32 Amarelia 5-Oct-05 20:32  Hi I have a mfc application whose icon for EXE is the one comes default MFC icon. I want to change it by the one I have. I have *.ICO file and I want my EXE icon to be that file.... How to change it ? Amarelia Maehsh Gujarat India Re: How to change the Icon of my EXE ? Boaz V5-Oct-05 20:59 Boaz V 5-Oct-05 20:59  Try importing the ICO file into the 'Resource' view in the visual c++ program. Make sure you remove the MFC default icon from that 'Resource' view. Re: How to change the Icon of my EXE ? Achim Klein6-Oct-05 10:42 Achim Klein 6-Oct-05 10:42  Hi, usually I replace the .ico file in the project's \res folder. Regards We can do no great things, only small things with great love. - Mother Theresa How to Enable/Disable Hardware Devices Like,Soundcard, Modem, USB devices chiragpatel_mca5-Oct-05 20:14 chiragpatel_mca 5-Oct-05 20:14  hi, I want to Enable/Disable Hardware devices mentioned above programatically using VC++. About database in vc++ : Plz Help : urgent parims5-Oct-05 20:12 parims 5-Oct-05 20:12  Hello , I am new to MFC. I am doing an application which involves database . I want Tables list when I choose my .mdb file using CFileDialog . and again ,when I press on Table , I want to retrive table fields I am using ODBC with MS Access databse praveen Re: About database in vc++ : Plz Help : urgent Boaz V5-Oct-05 21:02 Boaz V 5-Oct-05 21:02  Check out this link: http://www.codeproject.com/database/expressodl.asp it's quite helpfull Error encountered while displaying TIF Image with CXImage Library asifrogers5-Oct-05 19:59 asifrogers 5-Oct-05 19:59  Hi there! I am using CxImage library to display images in different formats in a Picture Control(VC++).It works fine with other file formats but as soon as some TIF Image format comes it generates the following two error messages in a message box. IT DISPLAYS THE IMAGE FINE IN PICTURE CONTROL but I DON'T WANT TO GET THOSE ERROR MESSAGES. The error messages are as follows: 1)TIFF IMAGE:wrong data type 1 for "XML Packet";tag ignored 2)TIFF IMAGE:unkown field with tag 34665(0x8769) encountered The piece of code at which these error messages in message box prompted is as under: HBITMAP m_bitmap = NULL; unsigned long fileFormat; if(getFileExtension() == ".tif") { fileFormat = CXIMAGE_FORMAT_TIF; }//End of if(getFileExtension() == ".tif") else if(getFileExtension() == ".gif") { fileFormat = CXIMAGE_FORMAT_GIF; }//End of else if(getFileExtension() == ".gif") else if(getFileExtension()==".jpg") { fileFormat = CXIMAGE_FORMAT_JPG; }//End of else if(getFileExtension()==".jpg") //CxImage imageFile(fileToDisplay, CXIMAGE_FORMAT_JPG); MessageBox("File Clicked = "+ fileToDisplay); CxImage imageFile(fileToDisplay, fileFormat); m_bitmap = imageFile.MakeBitmap(m_PicToDisplay.GetDC()->m_hDC); m_PicToDisplay.SetBitmap(m_bitmap); if (m_bitmap) DeleteObject(m_bitmap); asifrogers Namespace Rajesh match5-Oct-05 19:51 Rajesh match 5-Oct-05 19:51  I need good article to understand c++ namespace Thanx. Regards Rajesh Multiple modeless Dialog Boxes Z-Order bgray905-Oct-05 19:41 bgray90 5-Oct-05 19:41  This is driving me crazy. My application is a MFC Dialog Based Window. I have a button that brings up another modeless Dialog Box with some other buttons and information. I cannot move the second Dialog completely out of the way of my first one, so I would like to be able to Click on the Frame of the first Dialog Box and have it appear on top of the Second one. I have tried a lot of different calls to no avail. Here are some or all of them. Can anyone help please. void CSCSInfoDlg::OnLButtonUp(UINT nFlags, CPoint point) { CDialog::OnLButtonUp(nFlags, point); SetWindowPos(&this->wndTop , 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE); BringWindowToTop(); Invalidate(); UpdateWindow(); SendMessage(WS_MAXIMIZE, 0, 0); if (m_pParseLog) // second window m_pParseLog->SetWindowPos(&wndBottom, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE); // ShowOwnedPopups(false); SetFocus(); } Bruce Windows Movie Maker Timeline control Member 15698255-Oct-05 19:29 Member 1569825 5-Oct-05 19:29  Hi All, i am somewht stuck up, i need a Timeline control in vc++ 6, similar to the one we see in windows movie maker / macromedia flash (at the bottom of their UI). any help / directions / pointers would be highly appreciated. Thanx, Vin@)$0. CBitmap on Top of other control fjlv20055-Oct-05 16:06 fjlv2005 5-Oct-05 16:06  How can i make a CBitmap on top of other control. As I instantiated and display the bitmap, it appears behing a control.. I wanted it to be on top of other control and the control where the bitmap is displayed is behind the bitmap. HOw can i do it? More Power! ++Variable or Variable++ kenexcelon5-Oct-05 15:55 kenexcelon 5-Oct-05 15:55  What's the difference between having a variable for incrementing, like int Wins; ++Wins; or Wins++; Also, when do you use ++Wins or Wins++? Re: ++Variable or Variable++ Tim Smith5-Oct-05 16:12 Tim Smith 5-Oct-05 16:12  Well, one is a pre-increment and the other is a post increment. When used inside a complex statement, it does matter which one you use. For example: int c = *p++; // get the character and then increment the pointer int c = *++p; // increment the pointer and then get the character For the most part, when standing by itself, it doesn't matter which you use. However, on complex objects, pre-increment can perform a lot better than post-increment. For example - assume we needed to implement pre and post increment for a class. pre-increment: value = value + 1; return value; post-increment: oldvalue = value; value = value + 1; return oldvalue; As you can see, to do a post-increment, you first have to make a copy of the value so it can be returned to the caller. The good news is that most optimizers will optimize it away if you aren't interested in the return value. (for example, in a "for" statement) So which should you use? If it doesn't matter, get use to using pre-increments. Tim Smith I'm going to patent thought. I have yet to see any prior art. Re: ++Variable or Variable++ Rob Caldecott5-Oct-05 22:19 Rob Caldecott 5-Oct-05 22:19  Tim Smith wrote: If it doesn't matter, get use to using pre-increments. I'm thinking "STL iterators"! Re: ++Variable or Variable++ vikas amin5-Oct-05 23:45 vikas amin 5-Oct-05 23:45  i would also prefer pre-increments if i have a option . Vikas Amin Embin Technology Bombay vikas.amin@embin.com Re: ++Variable or Variable++ Eytukan6-Oct-05 2:07 Eytukan 6-Oct-05 2:07  its not a matter of preference , its the need. Every man should marry. After all, happiness is not the only thing in life. --[v]-- Bitmap Transparency in EVC3.0 fjlv20055-Oct-05 15:55 fjlv2005 5-Oct-05 15:55  Good day, I have made a class that can display a bitmap with transparance (i.e. display bitmap image except for the unwanted color is not displayed). It works fine in Visual C++. Now i'm porting the class to Embedded VisualC++(EVC3.0) however There is not CDC::SetMapMode in EVC3.0. Anybody knows what is its equivalent? Anyway here is my code in Visual C++, class CMyBitmap derived public from CBitmap and Draw function and has DrawTransparent function... In the code here I've just comment the CDC.SetMapMode code... Anybody have suggestion? Thanks. void CMyBitmap::Draw(CDC *pDC, int x, int y) { BITMAP bm; GetBitmap (&bm); CPoint size (bm.bmWidth, bm.bmHeight); pDC->DPtoLP (&size); CPoint org (0, 0); pDC->DPtoLP (&org); CDC dcMem; dcMem.CreateCompatibleDC (pDC); CBitmap* pOldBitmap = dcMem.SelectObject (this); //dcMem.SetMapMode (pDC->GetMapMode ()); pDC->BitBlt (x, y, size.x, size.y, &dcMem, org.x, org.y, SRCCOPY); dcMem.SelectObject (pOldBitmap); } void CMyBitmap::DrawTransparent(CDC *pDC, int x, int y, COLORREF clrTransparency) { BITMAP bm; GetBitmap (&bm); CPoint size (bm.bmWidth, bm.bmHeight); pDC->DPtoLP (&size); CPoint org (0, 0); pDC->DPtoLP (&org); CDC dcImage; dcImage.CreateCompatibleDC (pDC); CBitmap* pOldBitmapImage = dcImage.SelectObject (this); //dcImage.SetMapMode (pDC->GetMapMode ()); CDC dcAnd; dcAnd.CreateCompatibleDC (pDC); //dcAnd.SetMapMode (pDC->GetMapMode ()); CBitmap bitmapAnd; bitmapAnd.CreateBitmap (bm.bmWidth, bm.bmHeight, 1, 1, NULL); CBitmap* pOldBitmapAnd = dcAnd.SelectObject (&bitmapAnd); dcImage.SetBkColor (clrTransparency); dcAnd.BitBlt (org.x, org.y, size.x, size.y, &dcImage, org.x, org.y, SRCCOPY); CDC dcXor; dcXor.CreateCompatibleDC (pDC); //dcXor.SetMapMode (pDC->GetMapMode ()); CBitmap bitmapXor; bitmapXor.CreateCompatibleBitmap (&dcImage, bm.bmWidth, bm.bmHeight); CBitmap* pOldBitmapXor = dcXor.SelectObject (&bitmapXor); dcXor.BitBlt (org.x, org.y, size.x, size.y, &dcImage, org.x, org.y, SRCCOPY); dcXor.BitBlt (org.x, org.y, size.x, size.y, &dcAnd, org.x, org.y, 0x220326); CDC dcTemp; dcTemp.CreateCompatibleDC (pDC); //dcTemp.SetMapMode (pDC->GetMapMode ()); CBitmap bitmapTemp; bitmapTemp.CreateCompatibleBitmap (&dcImage, bm.bmWidth, bm.bmHeight); CBitmap* pOldBitmapTemp = dcTemp.SelectObject (&bitmapTemp); dcTemp.BitBlt (org.x, org.y, size.x, size.y, pDC, x, y, SRCCOPY); dcTemp.BitBlt (org.x, org.y, size.x, size.y, &dcAnd, org.x, org.y, SRCAND); dcTemp.BitBlt (org.x, org.y, size.x, size.y, &dcXor, org.x, org.y, SRCINVERT); pDC->BitBlt (x, y, size.x, size.y, &dcTemp, org.x, org.y, SRCCOPY); dcTemp.SelectObject (pOldBitmapTemp); dcXor.SelectObject (pOldBitmapXor); dcAnd.SelectObject (pOldBitmapAnd); dcImage.SelectObject (pOldBitmapImage); } HWND, HINSTANCE, HDC and HGLRC Alex Cutovoi5-Oct-05 15:46 Alex Cutovoi 5-Oct-05 15:46  Hi for all I would like to know what exactly are the HWND, HINSTANCE, HDC and HGLRC variables, when I use one or another and teh differences among them. I've read the msdn but I didn't understand nothing. Thanks for explanations Alex Cutovoi

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