C / C++ / MFC

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Re: Load & Display Image file types Using DirectDraw Christian Graus19-Mar-02 10:26 Christian Graus 19-Mar-02 10:26  GDI+ is your friend - it loads and saves file types and can use directdraw surfaces. Christian The tragedy of cyberspace - that so much can travel so far, and yet mean so little. "I'm thinking of getting married for companionship and so I have someone to cook and clean." - Martin Marvinski, 6/3/2002 New Year in Iran ! Hadi Rezaee19-Mar-02 5:35 Hadi Rezaee 19-Mar-02 5:35  Hi there, Wendsday (20 March) is new year in Iran ! I wanna say "HAPPY NEW YEAR !" to all of guys here ! and God willing, we'll can solve all problems about VC++ programming in new year !!! I wanna thanks of: Mr.VGirish - Panov Vitaly and etc. and my all other friends ! With Warm Regards, My month article: Game programming by DirectX by Lan Mader. Please visit in: www.geocities.com/hadi_rezaie/index.html Hadi Rezaie Drag & Drop like IE Favourites? Obliterator19-Mar-02 5:20 Obliterator 19-Mar-02 5:20  Does anyone know of an implementation of tree/list with reordering like in Internet Explorer's favourites? Where items can be drag/dropped to their new position with a horizontal bar showing where they will appear during the drag?? -- The Obliterator printing bitmap : size of the bitmap depends of printer resolution 19-Mar-02 5:03 19-Mar-02 5:03  I use GDI+ Graphic::DrawImage to display and print a bitmap; for display and print preview it works fine. But when printing, the bitmap is stretched or compressed on paper, depending of the printer resolution. To correct this problem, I applied a correcting factor : long dpiPrinter = pDC->GetDeviceCaps(LOGPIXELSX); long dpiScreen = 96; // returned by pDC->GetDeviceCaps(LOGPIXELSX) // when displaying double ratio = (double)dpiPrinter/dpiScreen; destPoints[0].X /= ratio; destPoints[0].Y /= ratio; ... // destPoints[0...2] are the corners of the rectangle // delimiting the zone on which the bitmap is to be printed graphics.DrawImage(pData->pBitmap, destPoints, 3, 0, 0, bitmap.GetWidth(), bitmap.GetHeight(), UnitPixel); Bitmap size is now almost correct but still a bit too large. And I don't see any reason why I have to modify the code for printing : MFC show the correct image in print preview, so I assumed I would get the same result on paper. Re: printing bitmap : size of the bitmap depends of printer resolution Christian Graus19-Mar-02 10:29 Christian Graus 19-Mar-02 10:29  You have to modify the code for the reason you said - MFC showed you how it looks on the screen, but it's up to you to match that in terms of the DPI of your printer. Have you tried using UnitInch to draw to the printer ? Just curious, I've not tried printing in GDI+ myself but it seems like it could be promising. Christian The tragedy of cyberspace - that so much can travel so far, and yet mean so little. "I'm thinking of getting married for companionship and so I have someone to cook and clean." - Martin Marvinski, 6/3/2002 Re: printing bitmap : size of the bitmap depends of printer resolution 27-Mar-02 0:24 27-Mar-02 0:24  After many trials it works, and here are my conclusions, or rather my observations, because I don't have a clear understanding of what's happening. I use the MM_LOMETRIC mapmode : logical units are 0.1 mm. The coordinates of the rectangle on which the bitmap is to be drawed are initially exprimed in these logical units. When I discovered that the size and position of the bitmap on paper were depending of the resolution of the printer, I thought of applying a correcting factor : factor = dpiPrinter/dpiScreen X1 /= factor ... I get these dpi with pDC->GetDeviceCaps(LOGPIXELSX); for the printer it can be 75 ... 1200 dpi, and for screen it is 96. On paper there was still a error of about 4 %; for example when I printed a bitmap whose width was expected to be 50 mm, I got 48 mm on paper. I have tested many hypotheses, including playing with Graphics.SetPageUnit(), Graphics.SetPageScale(), ... And finally an intuition, nothing rational but after all I was ready for black magic : an error of 4 %, OK let's say my dpiScreen is 100 and not 96... size and position are now perfect, for any printer resolution. I assume that the LOMETRIC mapmode is in cause; as the logical units are not pixels, the screen resolution returned by GetDeviceCaps() is not relevant anymore; but then how do work the factor dpiPrinter/100 ? I have not tested yet with another mapmode, for example HIMETRIC (.01 mm). I guess (?) that my 100 would have to be replaced by 1000. I can survive without understand that, but if someone has explanation... 2 port nic com test gus19-Mar-02 4:59 gus 19-Mar-02 4:59  hi guys(and gals), I have this 2 port nic installed. Bridging the 2 nic ports I have a crossover cable. What i'm looking to do is be able to send data out on one port and have it read in by the other. However on this basic app I wrote it will connect(bind is a better term) to each static ip on the nic; one to send, the other to receive. I chose to use port 3344(no specific reason). Once I connect i send a simple 2 mb file. The transfer works just fine. The problem I encounter is that the transfer is not going thru the crossover cable but somehow routed internally; telling me the os(nt4 server) knows the ip's are internal and not to send the data out across the crossover cable. What i'm looking to do is force the data out across the crossover cable. if it helps these are the ip's assigned: 192.168.0.1 192.168.0.2 thanks Re: 2 port nic com test Bill Wilson19-Mar-02 14:22 Bill Wilson 19-Mar-02 14:22  I don't think its the O/S that is doing it to you. More likely its the nic card itself (or maybe its driver). You can test this by installing a second nic. Re: 2 port nic com test gus20-Mar-02 5:12 gus 20-Mar-02 5:12  Thanks for the tip. I just installed a second nic and still get the same results. file transfer between the 2 ports still goes smooth even without the crossover attached Eric Re: 2 port nic com test Bill Wilson20-Mar-02 6:32 Bill Wilson 20-Mar-02 6:32  Wow, that is surprising. Fraid that's all I had to offer. Good Luck Re: 2 port nic com test gus20-Mar-02 6:38 gus 20-Mar-02 6:38  Thank you for your help nonetheless. Opening files 19-Mar-02 5:01 19-Mar-02 5:01  I know there exists a function in C++ which you pass a filename. The function then uses the program defined in Windows for that type of file to open the file. I don't know if this is the right place to ask, but I try anyway. So if you understand the above and know which function I mean or where to find it, please mail me. Thanks a lot. Re: Opening files Tomasz Sowinski19-Mar-02 5:09 Tomasz Sowinski 19-Mar-02 5:09  Use ShellExecute or ShellExecuteEx. Tomasz Sowinski -- http://www.shooltz.com I need help! hph19-Mar-02 4:55 hph 19-Mar-02 4:55  Have you made some experience with Active Directory ? If you do so, then please let me know because i have some problems with ADSI! Tooltips and disabled controls Dorset_Pete19-Mar-02 4:27 Dorset_Pete 19-Mar-02 4:27  Hi, My dialog app contains several buttons which are enabled and disabled at various times. I am trying to add tool tips for these buttons. The tooltips appear when the buttons are enabled, but disabled buttons do not show the tool tips When I create the tooltip control I use myTooltip->Create(this,TTS_ALWAYSTIP); Any ideas? Thanks in advance, Pete Re: Tooltips and disabled controls Tomasz Sowinski19-Mar-02 4:40 Tomasz Sowinski 19-Mar-02 4:40  TTS_ALWAYSTIP does something different - it will display tooltip when your dialog isn't active. Disabled buttons are probably ignored by design. Tomasz Sowinski -- http://www.shooltz.com Re: Tooltips and disabled controls Dorset_Pete19-Mar-02 22:25 Dorset_Pete 19-Mar-02 22:25  Thanks Tomasz - the TTS_ALWAYSTIP was a red herring. I will have to rethink my tooltip strategy now! Pete. Rebuild All Blues Monty219-Mar-02 4:13 Monty2 19-Mar-02 4:13  some how my project has gotten crazy , every time i complie it says that certain files need to be rebuild even if i have made no changes in the code , it is driving me carzy please help Re: Rebuild All Blues 19-Mar-02 4:17 19-Mar-02 4:17  Delete the ncb,opt & plg files & rebuild , mybe this will help Re: Rebuild All Blues Tomasz Sowinski19-Mar-02 4:26 Tomasz Sowinski 19-Mar-02 4:26  MailMonty wrote: it says that certain files need to be rebuild even if i have made no changes in the code Check the date of modification of these files. Build system uses date/time stamp to determine what has changed. Tomasz Sowinski -- http://www.shooltz.com Crystal reports Control Monty219-Mar-02 4:11 Monty2 19-Mar-02 4:11  i used crystal reports ver 6.0 i used an OCX control of Crystal reports to display various reports but when i make a SETUP through InstallSheild it says that the DLL for the OCX was added but when i run the setup the OCX cannot be registered i added all the dll's from crstal but still it does not register please HELP ??? thanks in advance Re: Crystal reports Control Bill Wilson19-Mar-02 14:24 Bill Wilson 19-Mar-02 14:24  Use the DEPENDS.exe program that ships with visual studio to get a complete list of the dlls used by the OCX. Re: Crystal reports Control Monty220-Mar-02 2:06 Monty2 20-Mar-02 2:06  i did and added all those files too but it still won't register what if these fiels are yet to be copied and the setup tries to register the control or the setup copies all the files and then tries to register ?? Re: Crystal reports Control Bill Wilson20-Mar-02 6:16 Bill Wilson 20-Mar-02 6:16  What is the error code returned by regsvr32? Isuppose its possible to get InstallShield to screw up the installation order, but its probably not easy. Are there any dlls that cannot be copied until the system reboots? Does InstallSheield automatically reboot your system? If not, does it need to? If you manually restart the system, can you register the control? DC Blues Monty219-Mar-02 4:08 Monty2 19-Mar-02 4:08  how do i copy contents of one DC to another i tried BitBLit but it does't work here is the sample code OnDraw(CDC *pDC) { CDC memDC; memDC.CreateCompatibleDC(pDC); DrawStuff(&memDC); //Draw in mem dc pDC->bitblit(0,0,width,height,&memDC,0,0,SRCCOPY); } but nothing happens if i don't use memDC then Drawing is done please help

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