Dima Malkov ha scritto: > Using Gambas 2.7, Debian Lenny 32 > -- > > Hello! > > Main question. > I want to run my gambas2-application from USB-FLASH-DISK on the > computers, that do not have gambas2 installed. > > There is a folder on my USB-FLASH-DISK with my application and > subfolders: > 1) "bin", includes files "gba2", "gbc2", "gbi2", "gbx2", soft links; > 2) "lib", includes files "*.so.0.0.0", "*.component", "*.gambas", soft > links; > 3) "share", includes "icons/*.png", "info/*" (strange files), > "mime/*.xml". > It also includes bash-script for copying all above to system > folders /usr/bin/, /usr/lib/ and /usr/share. > > Can I run my application with just some command, without copying? > Copying is a very bad idea - there is the risk of messing up the host system. In theory it is possible to do what you want, at a variable degree of difficulty. The only problem can arise if gambas searches its components using absolute paths without querying environment variables. You can refer, in your script, to relative paths for executables, and use the environment variable LD_LIBRARY_PATH for shared libraries. About /usr/lib and /usr/share, I am not sure about what gambas does. > > 2) I have the GridView in my program, that displays 4 thousands of rows. > When it updates the data (4-10 seconds), program do not reflexes. > There is a string in the documentation: > "You should use the last <method> if you have thousands of rows to > display.". > I'm sorry, I do not understand this at all. > Could anybody explain this on a simple example? > The "second method" refers to the Data event, and works like this: you don't load all the data in the GridView; instead, you wait for Gridview to ask for the data through the Data event. In the event handler, you load the requested data. This method if far faster because Gridview asks for data only when needed (ie, when they are visible). You put a Gridview in a form, and setup the Data event. When the form shows up, there will be, say, 10 rows visible; Gridview will raise the event 10 times, asking for data of each visible row. If you scroll the Gridview, as more rows will become visible, more data will be requested by mean of Data event.
Sorry for the missing answers - I told you the few things I knew. Regards, Doriano ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ Gambas-user mailing list Gambas-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gambas-user
