C / C++ / MFC

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Urgent - ComboBox problem Deian8-Feb-01 1:08 Deian 8-Feb-01 1:08  Hello, I have a question regarding the way that the ComboBox control looks in MFC. - When I put the ComboBox on my dialog, and add some items in it, when I press the controlling button(the one that shows the list) it shows just a single item with two scrollbar buttons -> how to fix that so I can view my items in a normal list - like this ComboBox -----item----| -----item----| -----item----| -----item----| -----item----| Thanks - Deian Re: Urgent - ComboBox problem Chris Losinger8-Feb-01 7:52 Chris Losinger 8-Feb-01 7:52  in the dialog editor, click on the combo drop-arrow button. then resize the rectangle that appears. this controls the size of the drop down list. -c Urgent - ComboBox problem Deian8-Feb-01 1:08 Deian 8-Feb-01 1:08  Hello, I have a question regarding the way that the ComboBox control looks in MFC. - When I put the ComboBox on my dialog, and add some items in it, when I press the controlling button(the one that shows the list) it shows just a single item with two scrollbar buttons -> how to fix that so I can view my items in a normal list - like this ComboBox -----item----| -----item----| -----item----| -----item----| -----item----| Thanks - Deian Re: Urgent - ComboBox problem Le Ridder Noir8-Feb-01 1:51 Le Ridder Noir 8-Feb-01 1:51  I've the sollution for you: Beginning Visual C++ 6 by Ivor Horton Considdered to be the worlds fastest knoppenbonker. 10 Months of working experience with the worlds fastest copie paster(about 2000 lines a minute). Greatings to my Guru "The bokkelul" And experience with the one and only NewEra Guru. Re: Urgent - ComboBox problem Le Ridder Noir8-Feb-01 2:00 Le Ridder Noir 8-Feb-01 2:00  Or open the dialog for resource editting, click on the dropdown button and change the size. If you want to change the list height of the combobox during runtime. Create a new class and let it inherrit from CCombobox, add the message handler: ON_CONTROL_REFLECT(CBN_DROPDOWN, OnDropdown) and edit the OndropDown function like this: void CMyComboBox::OnDropdown() { // This limits the maximum number of visible entries to 7 int nLines = min( max(GetCount(), 1), 7 ); CRect lprect; GetWindowRect( &lprect ); lprect.bottom = lprect.top + nLines * GetItemHeight( -1 ) + lprect.Height(); SetWindowPos(NULL, 0, 0, lprect.Width(), lprect.Height(), SWP_NOMOVE | SWP_NOZORDER ); } Good luck Le Ridder Noir Considdered to be the worlds fastest knoppenbonker. 10 Months of working experience with the worlds fastest copie paster(about 2000 lines a minute). And experience with the one and only NewEra Guru. Re: Urgent - ComboBox problem Le Ridder Noir8-Feb-01 2:00 Le Ridder Noir 8-Feb-01 2:00  Or open the dialog for resource editting, click on the dropdown button and change the size. If you want to change the list height of the combobox during runtime. Create a new class and let it inherrit from CCombobox, add the message handler: ON_CONTROL_REFLECT(CBN_DROPDOWN, OnDropdown) and edit the OndropDown function like this: void CMyComboBox::OnDropdown() { // This limits the maximum number of visible entries to 7 int nLines = min( max(GetCount(), 1), 7 ); CRect lprect; GetWindowRect( &lprect ); lprect.bottom = lprect.top + nLines * GetItemHeight( -1 ) + lprect.Height(); SetWindowPos(NULL, 0, 0, lprect.Width(), lprect.Height(), SWP_NOMOVE | SWP_NOZORDER ); } Good luck Le Ridder Noir Considdered to be the worlds fastest knoppenbonker. 10 Months of working experience with the worlds fastest copie paster(about 2000 lines a minute). And experience with the one and only NewEra Guru. Command routing/Context Menu problem Christian Graus7-Feb-01 16:06 Christian Graus 7-Feb-01 16:06  I have a problem with a popup menu - namely I want to set up a menu so it has some default commands that get added, and acted on within OnContextMenu, but I want to add them to an existing menu and send off my messages if any of the existing commands are selected. I can make one or the other happen, but not both. I have the command returned and am switching it's value. Basically I want to know what to put in the default case, where one of the id's I am looking for is not the value returned.... Thanks as always Christian The content of this post is not necessarily the opinion of my yadda yadda yadda. To understand recursion, we must first understand recursion. Changing toolbar background Christian Graus7-Feb-01 15:28 Christian Graus 7-Feb-01 15:28  I have a little problem - when I change my toolbar background to a gradient in OnEraseBackground, buttons that have a transparent colour set remain square, with the underlying colour unchanged. Can anyone tell me how to fix this ? Thanks Christian The content of this post is not necessarily the opinion of my yadda yadda yadda. To understand recursion, we must first understand recursion. CRicheditView and WYSIWYG page effect 7-Feb-01 13:09 7-Feb-01 13:09  I am writing a wordprocessor application using CRichEditView as my view, I can do all that Word Procssor stuffs like "wordpad" application. But I want to implement cool WYSIWYG page effet like Microsoft Word (or any leading Word Porcessor).This involvs drawing page borders on the view and somehow move the cursor from one page to next page..... Someone give me an idea, how to start? or where to for more details etc..... _dave WaitForSingleObject() Problem!!!!! Richard Cheng7-Feb-01 11:21 Richard Cheng 7-Feb-01 11:21  I'm developing a program required to use Synchronization function WaitForSingleObject(). It may take several seconds or longer to run this function, therefore, I want to add a Progress Bar control to let the user knows how long do they need to wait. However, I cannot find the source code of this WaitForSingleObject() function, so I cannot put the progress bar SetPos() in that function. I've tried to set the progress bar move by timer...but when the program run WaitForSingleObject(), the progress bar stopped! Do anyone know how to solve this problem? Re: WaitForSingleObject() Problem!!!!! Erik Funkenbusch7-Feb-01 11:30 Erik Funkenbusch 7-Feb-01 11:30  WaitForSingleObject is a Windows API function. There is no source code for it. You can't do what you are suggesting. About the closest you could get is to give WaitForSingleObject a timeout value, update the progress bar, then go back to waiting. That is a poor design, however, since your main message pump is locked and if some other window obscures yours, it won't redraw when the window is removed. You usually want to use WaitForSingleObject in a worker thread, where message pump updates are not a problem. Re: WaitForSingleObject() Problem!!!!! Richard Cheng8-Feb-01 9:10 Richard Cheng 8-Feb-01 9:10  Is that mean that if originally the timeout value is 16000....(WaitForSingleObject(xxxx, 16000)), then I split it into ... let say....5 ......e.g.: WaitForSingleObject(xxxx, 3200); Call ProgressBarControl; WaitForSingleObject(xxxx, 3200); Call ProgressBarControl; WaitForSingleObject(xxxx, 3200); Call ProgressBarControl; WaitForSingleObject(xxxx, 3200); Call ProgressBarControl; WaitForSingleObject(xxxx, 3200); Call ProgressBarControl; So that the progress bar can update every 3200 time interval?..... Sorry...I just a beginner in MFC programming;P How to determine if a user is logged on to the system from a service 7-Feb-01 9:04 7-Feb-01 9:04  How to determine current logged on user? Re: How to determine if a user is logged on to the system from a service Erik Funkenbusch7-Feb-01 11:34 Erik Funkenbusch 7-Feb-01 11:34  You know, I don't usually get bent out of shape over simple questions, but it just annoys me sometimes that people don't use the resources that are at their disposal. VC comes with documentation that provides very easy searching for such things. GetUserName() is what you want. Re: How to determine if a user is logged on to the system from a service Joe Moldovan9-Feb-01 11:54 Joe Moldovan 9-Feb-01 11:54  Patience Erik, patience. The question is simple for you because you know the answer. For others it can be a difficult system to master. The documentation is not as good as you suggest. Things can be hard to find, ambiguous, out of date or plain wrong. It's like camel sh*t in the desert: there is lots of it but it's not good to eat. Redirecting console output 7-Feb-01 7:17 7-Feb-01 7:17  Is there a way to redirect the text output of a console program to an edit control, like an IDE that executes some kind of compiler program and shows the results in it? Thanks a lot! Erik Re: Redirecting console output Matt Gullett7-Feb-01 7:42 Matt Gullett 7-Feb-01 7:42  Yes it can be done. I recently developed a simple implementation of this in VC++ for a friend. It is not complete, but basically works. If you would like the code, email me at gullettm@yahoo.com and I will respond with the code attached. how to save the all contend of scrollview to a bitmap file 7-Feb-01 5:55 7-Feb-01 5:55  i draw something in scrollview.but the size of the screen is smaller than the size of the scrollview.i want to save all things in the scrollview to a bitmap file! thank u first! Re: how to save the all contend of scrollview to a bitmap file l a u r e n7-Feb-01 6:59 l a u r e n 7-Feb-01 6:59  presumably you are building the bitmap in a memory device context (memdc) and so you would save it from there not the actual view mostly watching the human race is like watching dogs watch tv ... they see the pictures move but the meaning escapes them Re: how to save the all contend of scrollview to a bitmap file 8-Feb-01 4:54 8-Feb-01 4:54  can u tell me more by email! E_Mail:freesys@263.net! Thank you very much! Re: how to save the all contend of scrollview to a bitmap file Chris Losinger7-Feb-01 8:01 Chris Losinger 7-Feb-01 8:01  1. copy the screen to an HBITMAP (CreateCompatible*, BitBlt) 2. use GetDIBits to get a DIB from that HBITMAP 3. fill in and write a BITMAPFILEHEADER structure to the output file 4. write the contents of the DIB to the output file -c ----------------------------- Image Processing and More : http://www.smalleranimals.com Re: how to save the all contend of scrollview to a bitmap file l a u r e n7-Feb-01 9:43 l a u r e n 7-Feb-01 9:43  ummm ... 1. copy the screen to a bitmap? surely you would be keeping track of the drawing in the document or whatever you're using and so wouldn't need to copy the screen? or have i misunderstood something fundamental? mostly watching the human race is like watching dogs watch tv ... they see the pictures move but the meaning escapes them Re: how to save the all contend of scrollview to a bitmap file Chris Losinger7-Feb-01 10:00 Chris Losinger 7-Feb-01 10:00  i understood his question as "how do i do a screendump of my CScrollView". he did say "bitmap file". -c Re: how to save the all contend of scrollview to a bitmap file 8-Feb-01 4:59 8-Feb-01 4:59  save the drawing in the scrollview to a bitmap! Re: how to save the all contend of scrollview to a bitmap file 8-Feb-01 4:58 8-Feb-01 4:58  sorry!you are wrong! not copy screen to bitmap! save the drawing in the scrollview to bitmap! the size of the screen is smaller than the size of the view!

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