I'm trying to use IDI_INFORMATION with wxWidgets 2.8.11 (from wx/version.h) (for wxMemoryDC::DrawIcon). But first I have to load the icon: wxICON(IDI_INFORMATION) fails, LoadFile(wxT("IDI_INFORMATION")) also fails ( but LoadFile(IDI_INFORMATION) compiles and crashes, IDI_INFORMATION is a fake string pointer too tricky for wxWidgets). Hmmm, then I add some ifdefs to use Windows API: ::LoadIcon(NULL, IDI_INFORMATION) works, then wxIcon::SetHICON. While DrawIcon apparently works, the nasty surprise is that wxIcon::GetWidth, wxIcon::GetHeight return 0. Hmmm, let's get the size and use wxIcon::SetSize. Now it is finally done... wait!, but who's gonna destroy my icon? Not sure, so add the ifdef, SetHICON(NULL) and DestroyIcon.
The small question: do I have to destroy the icon myself?
The big question: is wxIcon entirely useless in this case?
PS After some debugging I discover that LoadFile(wxT("wxICON_INFORMATION")) works, wow!, but is it really multi-platform? Do I have read all the wx sources for drawing a standard icon?
The cross-platform solution is provided by wxArtProvider, just use its GetIcon() method with wxART_INFORMATION argument.
Related
I'm trying to set up copy/paste actions using ctrl+shift+c/p like it is done in GNOME terminal but for urxvt. I didn't find any simple solution - it seems like it always requires scripts, hacks etc which gets me annoyed when it comes to such a basic things. That's why I'm wondering if it is possible to just change/add some entries in ~/.Xresource to move the default behavior from ctrl+alt+c/p to ctrl+shift+c/p - since the former already works as expected.
Also, there is a lot of notions regarding clipboard itself: X calls them "selections" rather than "clipboards"; there are PRIMARY and CLIPBOARD selections; etc. I don't really understand all these subtleties - so feel free to be verbose!
I use Xorg server with i3 WM if it makes sense and rxvt-unicode v9.22 - released: 2016-01-23
Contrary to Thomas' answer, it looks like you can. In the same question he referenced Spencer and Enno both mention that you can bind the native eval extensions in your .Xresources file. This would look like the following:
URxvt.keysym.Shift-Control-V: eval:paste_clipboard
URxvt.keysym.Shift-Control-C: eval:selection_to_clipboard
To disable the previous keybindings, you'll also need:
URxvt.keysym.Control-Meta-c: builtin-string:
URxvt.keysym.Control-Meta-v: builtin-string:
You can reload the file with:
xrdb -load .Xresources
You'll need to restart rxvt for the changes to take effect.
short: no, you can't
longer: I pointed out in Rebinding CTRL-ALT-[C|V] to CTRL-SHIFT-[C|V] in URxvt >= 9.20 that the binding for these is essentially hardcoded in urxvt without an easy way to change them (aside from external scripts or modifying the program itself).
So.. I just downloaded Xojo 2014 for OS X, and up to this point have found it a pretty simple and effective development environment.
However, I've been trying to make a function or sub routine for 45 minutes. Every time I try following tutorials or the Xojo documentation I get the following error:
I've followed (even though I could be missing something) the directions here: http://docs.xojo.com/index.php/Function
Even though there is no full example in the documentation (bad development environment).
Also, in the screen shot is showing a sample function I copied and pasted off Xojo forums and is supposed to work. I'm not a programming newb per say, but more an Xojo newb. I've also had experiences with silly bugs in RealStudio in the past.
Can someone maybe point out what I could be missing?
You cannot use the Function, Sub, End Function, or End Sub lines in the method editor. Doing so will cause a syntax error because method declarations are automatically added by the IDE based on the values you enter into the method editor's name, parameters, and return type fields.
e.g.
as said,
Function, Sub, End Function, or End Sub is done for you,
you can do 'exit sub' if nothing need to be returned, else just return a proper value
like some events need a true or false, so if you need the exit the function, just return false
You cannot add inline functions within your Xojo code. You add methods to your project items these ways:
Insert->Method
"+" button on editor toolbar, then Method
Insert button on main toolbar, then Method
Option-Command-M (on OS X)
I remember seeing somewhere that you can specify which dll to get the address of symbols so that one can use that variable in the watch window. I can't for the life of me remember where I saw this. The best that I can come up with is Format Specifiers in C++.
The reason I want this is so that I can see the visibility status of a window and MSVS keeps saying that identifier "IsWindowVisible" is undefined.
I was trying to use something like the following in the watch window:
::IsWindowVisible(m_hWnd),user32.dll
Using:
this->IsWindowVisible()
results in Function CWnd::IsWindowVisible has no address, possibly due to compiler optimizations. which is why I'm trying to use the win32 call. Ideas?
http://msdn.microsoft.com/en-nz/library/y2t7ahxk.aspx
Haven't tried it, but it seems to me that IsWindowVisible(m_hWnd) should work, or maybe IsWindowVisible(this->m_hWnd).
> I have visual studio c++ express and a NVIDIA GeForce 7900 GS. I'm using glew to get at the openGL extensions. Calling glGenBuffers crashes as its a NULL pointer tho. I have an open GL context before I make the call ( wglGetCurrentContext() != NULL ). I'm calling glewInit() before the call. glewGetString( GLEW_VERSION ) is returning GLEW_VERSION_1_5. What am I doing wrong ? Is the card too old ? Is it the driver ?
Remember to make a glewInit() call in your code so that you get valid pointers to GL functions.
Hope it helps.
Without seeing your code it would be difficult to tell, but what you are attempting to do seems like it could be helped a lot by using GLee. It is designed to load all current extensions and you have the ability to check what is supported, e.g. :
#include <gl\GLee.h> // (no need to link to gl.h)
...
if (GLEE_ARB_multitexture) //is multitexture support available?
{
glMultiTexCoord2fARB(...); //safe to use multitexture
}
else
{
//fallback
}
The above was shamelessly copy/pasted from the GLee site, but it displays the functionality I'm trying to showcase.
You need to call glewInit() post having a valid context. And that would be, in the world of glew, after you've called glfwMakeContextCurrent(myWindow);
I have actually run into this problem with GLEW. For me, it was nullifying the function pointer for glGenerateMipmap. I fixed it by simply restoring the pointer to the appropriate function. This is my example in Linux:
glGenerateMipmap = (void(*)(GLenum))
glXGetProcAddressARB((GLubyte*)"glGenerateMipmap");
There is a WGL equivalent for glXGetProcAddress; I just don't remember the name off the top of my head. Try manually restoring the functions using this method. If you come across many functions that are null, something is definitely wrong in your setup process. The only other functions I recall having to restore were glGenVertexArrays, glBindVertexArray, and glDeleteVertexArrays. If your glGenBuffers is null, odds are that glBindBuffer and glDeleteBuffers are null as well. :(
Test if the desired extension is actually supported by checking the string returned by glGetString(GL_EXTENSIONS); if it's not there you know what's causing your problems.
I need to write a GUI app in Ruby that supports easily changing the text color for items in a listbox (ownerdraw) on Linux.
What GUI framework is recommended?
Shoes
Nobody knows shoes
http://shoooes.net/
It's by _why, so it's zany, but very usable.
Sorry for the super late answer, but in case anyone's wondering:
If you're using JRuby, I think Monkeybars should work for this. I'm 100% sure, first-hand, that it works for general list box manipulation, but what I'm not 100% sure about is whether it has complete functionality. Also not 100% on how perfectly it would work with Ownerdraw listboxes; I used typical Java-defined-netbeans-built boxes for simplicity's sake.
I didn't however, allow users to select multiple of the lines from the list (i.e. ctrl or shift + click). I remember that was working in some ways, but was giving me some trouble as far as passing functions. If I recall correctly, the biggest issue I was having with this, actually, was deciding how I wanted to manage requests to reorder the list while they had many things selected (E.G. if they clicked the shift-down or shift-up buttons while holding many elements). But other than that I think it worked fine.
From what I've seen using both, it's a bit more complicated to set up than shoes, but I found it to be very rewarding (at least as far as a simple school assignment was concerned, where I was required to have a GUI, but wanted to start learning Ruby, so I opted for a Java Swing front end to JRuby).
I certainly wouldn't be the best source for help setting it up and getting all your functions to work, and unfortunately there is minimal information about Monkeybars floating around, especially with regards to specialized "how do I do X?" kinds of questions, but there are boards available (links below) with very friendly and helpful posters. Much like here :)
http://groups.google.com/group/monkeybars-mvc/topics
*looks like the Kenai page has been abandoned and moved to the above google group and github
They also force a MVC architecture - so if you're going to use Monkeybars, you need to design your program to be compatible with this style. I never really saw this as a big deal, but I'm sure some people would dread being told how to structure their code.
So it's important to consider whether those are deal breakers before going through the trouble of installing the Monkeybars tools on your computer, but if you can deal with the few issues associated with it, Monkeybars can be a fantastic tool for building (and perhaps more importantly - manipulating) GUI around a JRuby project.
EDIT: here's some very basic example code using Moneybars:
define_signal :add_element, :add_element
def add_element(model, transfer)
trackList.getModel().addElement(model.addable.to_s)
end
where "trackList" was simply what the list was called on the Java end of the code (so "trackList.getModel()" would return the listbox model holding the list [for this project I needed 7 distinct lists to share a listbox, and to be switched between via drop-down list; if you only wanted one list to use the listbox you could just call it by name and remove the ".getModel()" part]. "addable" was the name of the well-fomatted element/string that I wanted to add to the list, and "model" (lower case) was the 'model' class used to conform to MVC architecture.
Sorry about the ugly signal part at the top, I had heavy deadlines and not enough time to play around with the variable names to use them better. It worked, and that was what mattered at the time (unfortunately). I'm reasonably sure the first one was the name of the signal (sent from the 'control' class) and the second one was probably a reference to the definition immediately following it. Sorry about my ignorance here, but it just made life easier to leave it as was (i.e. as was explained in the Monkeybars example code).
But there you have it, a function for adding elements to a GUI listbox using JRuby and Swing. It automatically redraws the screen when these signals are sent, so that's taken care of too. Right after that def is called you would see the changes. Modifying other aspects of the listbox were just as simple. Hope that helps anyone :)
The best way to go is visualruby:
http://visualruby.net
The code would look something like this:
#view = VR::ListView.new(:name => String, :address => String)
#view.ren_background(:name => "red")
#view.add_row(:name => "Hank", :address => "123 main")
That would make the background red for the name column. The #view variable would be used to populate a spot in the gui form.