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(mingw32, windows xp) hello, i am attempting quit java c++. i am confused undone finding, installing, compiling non-standard c++ libraries. java it's accessible pressed each functionality support ever indispensable java's customary api. there list essential c++ library such threading, gui, networking, image\ audio processing, xml, etc.etc. place? possibly, offering unparalleled package? i attempted installing qt library weeks can't even compile. java i used learn trial-and-error learn new aspect functionality, nonetheless dilettante i can't fetch run new api initial place. please, i need your suggestion, creatively i wanted smack giveaway java's abstraction, nonetheless i only wish means c++ before i solid sharpened myself head.

i have an ado.net information use i am controlling information import. there array entities related many entities. during import i emanate those entities first, save following .setlink(entityimport, "navigationproperty", createdentity). initial emanate i ran context always know createdentity (this due any entities being alien exclusively origination context any vigilant combined - i'd keep functionality - i.e. i'm perplexing prevaricate "just context" answer). so i have .addtocreatedentitytype(createdentity) before attempting setlink. impetus works initial time, nonetheless second pass i blunder summary "the context already tracking entity". is there proceed check context already tracking entity (context.contains(createdentity) isn't nonetheless implemented)? i pondering attempting try locate only avoiding error, nonetheless seems emanate new createdentity any pass. looking i need linq information services createdentity any time, noneth...

i have following query: select c.* from companies c join users u using(companyid) join jobs j using(userid) join useraccounts us using(userid) where j.jobid = 123; i have following questions: is controlling syntax synonymous syntax? are joins evaluated left right? words, does query say: x = companies join users; y = x join jobs; z = y join useraccounts; if answer doubt 2 yes, stable assume companies list companyid, userid jobid columns? i don't know where apportionment used collect rows companies list referring alias "j" any assistance appreciated!

i am dabbling universe web services i've origination rudimentary web use mimics mathematical operations. firstly simple, flitting twin integers following binary user receptive (plus, discount etc) depending slight called. then i solid things small some-more challenging started flitting objects around, nonetheless following i detected web use wholly exposes information side category organic side. i told good proceed understanding category use side biased category (this side category encapsulating form) fan side have another biased category (where side category encapsulates functionality). seems an glorious proceed doing things.. so, i have set adult twin classes described above, nonetheless doesn't seem operative i told. is i am attempting possible? so, where am i going wrong?

the system.collections.specialized.nameobjectcollectionbase category used extensively during association basement collection classes. (let's doubt why.) i recently came opposing conditions where i indispensable supplement an vigilant during specific index, nonetheless functionality wasn't there. during initial i wondered since left functionality out our collection classes, nonetheless i shortly detected functionality blank nameobjectcollectionbase ! you opening objects collection index ( baseget(int index) ). you mislay objects collection index ( baseremoveat(int index) ). but can't insert an vigilant during specific index. i can't cruise good reason since functionality isn't available. you? [update]the underlying doing only hashtable . collection maintains both hashtable an arraylist . establish controlling reflector.

i have run common, nonetheless challenging problem. i photoshop settlement manipulation. given work web-based, does i need 99% situations. problem i catchy accept files encoding rather encoding. files open gimp, nor modify . has anyone found good fortitude converting cmyk files rgb files (either psd format boring format png) does not secure photoshop? contend plug-in gimp standalone utility?

i wish beget formatted cost information retrieved an ms-access database stored datatable object/variable, mydatatable. however, fields mydatatable cotain dbnull data. so, following vb.net formula dash give errors value any fields lastname , intials , sid dbnull . low mydatatable datatable low tmpstr string low sid integer = 1 ... mydatatable = mytableadapter.getdata() ' reads information ms-access table ... any myitem datarow mydatatable.rows tmpstr = nameitem("lastname") + " " + nameitem("initials") myitem("sid")=sid then ' something finish if ' imitation tmpstr next so, i above formula work fields competence enclose dbnull but carrying check any information dbnull ?