C / C++ / MFC

FirstPrevNext

Re: radio button states l a u r e n2-Jan-04 18:23 l a u r e n 2-Jan-04 18:23  radio buttons are weird they actually get put into an array in effect so the value u get back is the zero-based index of the radio button within the group (as far as i recall) "there is no spoon" biz stuff   about me Re: radio button states Ravi Bhavnani2-Jan-04 22:28 Ravi Bhavnani 2-Jan-04 22:28  Use separate CButton members for each radio button. Then test this condition: m_checkButton_1.GetCheck() == BST_CHECKED to see if it's checked. /ravi Let's put "civil" back in "civilization" Home | Articles | Freeware | Music ravib@ravib.com Re: radio button states Selvam R2-Jan-04 22:55 Selvam R 2-Jan-04 22:55  Hi, I think radio buttons with in group box ( privious one) is better then separate CButton members for each radio button. Correct!!? With Regards, R.Selvam Re: radio button states Ravi Bhavnani3-Jan-04 6:05 Ravi Bhavnani 3-Jan-04 6:05  I prefer to use individual (CWnd derived) members for each controls. That gives me complete control over my GUI and would also address your issue. /ravi Let's put "civil" back in "civilization" Home | Articles | Freeware | Music ravib@ravib.com Re: radio button states Prakash Nadar3-Jan-04 0:10 Prakash Nadar 3-Jan-04 0:10  There are good tutorials on radio button on CP you can check them out. My God is more powerfull Than Your God. (the line that divides the world) Re: radio button states asierra13-Jan-04 14:08 asierra 13-Jan-04 14:08  m_button =-1 "None Checked" m_button = 0 "button a Checked" m_button = 1 "button b Checked" The difference between TRUE and true shultas2-Jan-04 15:09 shultas 2-Jan-04 15:09  Hello all. I am just wondering, sometimes I see things such as: m_ListBox.ShowWindow(TRUE); and other times I see: m_ListBox.ShowWindow(true); I am just wondering if there is any difference between TRUE and true / FALSE and false or if they both mean the same thing? (ie constants with the same value) Re: The difference between TRUE and true Jörgen Sigvardsson2-Jan-04 15:22 Jörgen Sigvardsson 2-Jan-04 15:22  the difference is that TRUE is a #define and true is a constant, very much like any integer 1, 2, 3, 23423. TRUE happens to evaluate to 1, and the integer representation of true is 1, hence you can use them interchangably. But one should always strive to "put the round ball into the round hole, and not the square hole". -- They say the most horrible things, but I hear violins. When I close my eyes, I'm at the center of the sun. Re: The difference between TRUE and true Michael Dunn2-Jan-04 16:15 Michael Dunn 2-Jan-04 16:15  bool is a C++ built-in type with two possible values, true and false. Nothing else. BOOL is something MS made up for use in Windows and MFC. They needed a boolean type that worked in C and C++, and since they did this before bool was added to C++, they couldn't just reuse bool. BOOL is defined as: typedef int BOOL; #define FALSE 0 #define TRUE 1 The trouble with those definitions is that the BOOL notion of "true" is not 1 but non-zero. A function that returns a BOOL may return 1 to mean "true", or some other nonzero number (I've seen it myself, can't recall the API names off-hand though). Because of that, you should never test a BOOL variable/function against TRUE, just test as a boolean and the language rules will take care of the rest. You should, in general, use bool for your own code, assuming it's C++. You can pass a bool to a function expecting a BOOL because the bool gets promoted automagically by the language rules to the integer 0 or 1, for false or true respectively, which satisfies the definition of BOOL. --Mike-- Ericahist | CP SearchBar v2.0.2 | Homepage | 1ClickPicGrabber New v2.0! | RightClick-Encrypt If my rhyme was a drug, I'd sell it by the gram. Re: The difference between TRUE and true Hauptman(n)3-Jan-04 5:16 Hauptman(n) 3-Jan-04 5:16  afaik is BOOL an unsigned int, but thats not very important scio me nihil scire My OpenSource(zlib/libpng License) Engine: http://sourceforge.net/projects/rendertech Its incurable, its a Pentium division failure. Re: The difference between TRUE and true Michael Dunn3-Jan-04 6:48 Michael Dunn 3-Jan-04 6:48  windef.h says typedef int BOOL; --Mike-- Ericahist | CP SearchBar v2.0.2 | Homepage | 1ClickPicGrabber New v2.0! | RightClick-Encrypt You cannot truly appreciate Dilbert unless you've read it in the original Klingon. Re: The difference between TRUE and true Hauptman(n)3-Jan-04 8:36 Hauptman(n) 3-Jan-04 8:36  k then it was something other..... scio me nihil scire My OpenSource(zlib/libpng License) Engine: http://sourceforge.net/projects/rendertech Its incurable, its a Pentium division failure. Re: The difference between TRUE and true shultas2-Jan-04 21:31 shultas 2-Jan-04 21:31  Gotcha! Thanks for the replies, that explained it perfectly! How to select a folder in VC .NET shultas2-Jan-04 13:32 shultas 2-Jan-04 13:32  Hello all. A little preface, I'm really new at programming with Visual C++. I've just installed VS .NET on my machine and have purchased a few books. I have finally gotten down the CFileDialog class and I can use it to select a file with ease. I am wondering if there is a similar way to select a folder/directory? I have searched for quite some time (I usually search for at least 30-90 minutes or more before I post a message here), and cannot find anything to help me. I've found a DirPkr class, but it appears it was written for VC++ 6 and there are about 50 errors when I compile in VC .NET, and I'm not advanced enough to know what the problems are. I was wondering if there was an easy class out there for VS .NET (or a way to easily adapt CFileDialog, or maybe another class in MFC to do this?) I've searched the MSDN site too but cannot find anything. I am getting better at wording my searches though Thanks! Shultas Re: How to select a folder in VC .NET Gary R. Wheeler2-Jan-04 14:02 Gary R. Wheeler 2-Jan-04 14:02  There is a shell function called SHBrowseForFolder that does this. There is an article here[^] about a wrapper for it that may give you some hints. Software Zen: delete this; Re: How to select a folder in VC .NET shultas2-Jan-04 14:22 shultas 2-Jan-04 14:22  BINGO! THANK YOU! (yep, i'm shouting That's exactly what I was looking for and this example there worked great. Sometimes I just sit there and enter a bunch of phrases into the search box "select folder" "pick folder" "choose folder" and I usually find what I'm looking for. This time, none of the choices that I used yielded a result. Thanks for the quick reply. I will be able to sleep tonight. Oh wait, it's only 8:30, that means I've got 8 more hours to play! Re: How to select a folder in VC .NET Michael Dunn2-Jan-04 16:20 Michael Dunn 2-Jan-04 16:20  Take a look at the FAQ too, for example: 4.13 How do I prompt the user to select a directory?[^] --Mike-- Ericahist | CP SearchBar v2.0.2 | Homepage | 1ClickPicGrabber New v2.0! | RightClick-Encrypt If my rhyme was a drug, I'd sell it by the gram. Drawing in layers mirano2-Jan-04 12:48 mirano 2-Jan-04 12:48  Hi guys. I want to draw in layers, so if anybody could give me a hint about that, I would really appreciate it. I want to be able to draw in multiple layers, so for instance if I am to erase a rectangle or any other more complex object, I would only discard a layer and repaint that object as altered, not having to redraw the background or anything else. It is something like in Photoshop when you draw on the layer and you bring it to the front, then you can delete the whole layer at any moment later. I only need a general guidance, not the actual code. Thanks. Re: Drawing in layers Azghar Hussain3-Jan-04 0:52 Azghar Hussain 3-Jan-04 0:52  Hi, I think this is possible. Why don't you decrease the background color when erasing. Like Red when erased become light red. Then you will have a layout and user can redraw or repaint according to layout. Thanks & Regards, Salman Live and Let live Re: Drawing in layers mirano4-Jan-04 5:52 mirano 4-Jan-04 5:52  This is not possible, cause the background drawing will be complex and I can not go pixel by pixel redrawing it so to appear as erased. There has to be a solution for this. Thanks . Drawing in layers mirano2-Jan-04 12:47 mirano 2-Jan-04 12:47  Hi guys. I want to draw in layers, so if anybody could give me a hint about that, I wopuld really appreciate it. I want to be able to draw in multiple layers, so for instance if I am to erase a rectangle or any other more complex object, I would only discard a layer and repaint that object altered, not having to redraw the background and everything else. It is something like in Photoshop when you draw on the layer and you bring it to the front, then zou can delete the whole layer at any stage later. I only need a general guidance, not the actual code. Thanks. Re: Drawing in layers l a u r e n2-Jan-04 14:19 l a u r e n 2-Jan-04 14:19  u would keep each layer in a separate memdc and composite them together when u draw the image then u have controls to select the current layer etc etc draw from back to front when u composite "there is no spoon" biz stuff   about me SQL statement problem Zombie_Inc2-Jan-04 12:38 Zombie_Inc 2-Jan-04 12:38  Hi, I'm using ODBC to connect to a MS Access database. Here is what I would like to do: Load a CComboBox with one of the fields in a table from the database (no problem). Then, when selecting items in the CComboBox, have a bunch of CEdit boxes loaded with the corresponding row in the table. Can I use a SQL statment similar to this, as in VB6???: CString sSQL;<br /> sSQL = "SELECT * FROM tablename WHERE fieldname = selectedcoboboxitem"; I just can't figure out how to do it. Hope someone can help me out! Also is it possible to compact and repair a MS Access database through the ODBC??? Thanks in advance. Re: SQL statement problem l a u r e n2-Jan-04 14:22 l a u r e n 2-Jan-04 14:22  no u cant do that in raw sql from any language u would have to do something like: "select fieldname1,fieldname2,fieldname3 from table where blah = blee" then i would suggest u use a clistcontrol to display them and allow in-place editing of the reqd columns (u might need a custom clistcontrol from here to do the editing) "there is no spoon" biz stuff   about me Re: SQL statement problem Zombie_Inc3-Jan-04 0:38 Zombie_Inc 3-Jan-04 0:38  Thanks for your reply but could you please give me an example on how to select fields in a database based on the selection of a combobox. The SQL statment won't accept CStrings. I would really appreciate it. Thanks again!

Last Visit: 31-Dec-99 18:00     Last Update: 26-Apr-24 11:20 Refresh ᐊ Prev1...13785137861378713788137891379013791137921379313794 Next ᐅ

General    News    Suggestion    Question    Bug    Answer    Joke    Praise    Rant    Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.