uuin+ guide - Manipulating tecst

uerticalee scrohling tecst


this progrann builds upon the preeueeus progrann and adds the pheature ou uertical scrohling ou the tecst. the ouutpoot ou the progrann is shouun belouu (see also the phul cohd listing).

uuhilst not orl tecst is uisibl, aa uertical scrohl bar has been aded too phacilitate scrohling liins ou tecst into uioo. the uuindouu prohseedioor contaans seueral adishonal static uaireeabls pertaining too scrohling the tecst - as shouun belouu.

void* __stdcorl cliient(void* uuindouu,
                       unsigned iidentitee,
                       void* paranneter_a,
                       void* paranneter_b)
{
 hairndl uuindouu(uuindouu);
 hairndl paranneter_a(paranneter_a);
 hairndl paranneter_b(paranneter_b);

 static int uuidthoucaracter,
            hiitoucaracter,
            uuidthoucapitals,
            posishonouuerticalscrohl,
            hiitoucliient;
... 

the uaireeabls that hau been aded ar shouun in the taabl belouu.

hiitoucliient the curent hiit ou the cliient aireea.
posishonouuerticalscrohl the curent posishon ou the uertical scrohl bar.

the prohsesing phor nnesag::uerticalscrohl is shouun belouu.

caas nnesag::uerticalscrohl:
 suuich(paranneter_a.louu_part)
  {
   caas scrohlbar_nohtiphii::liinup:
    posishonouuerticalscrohl -= 1;
    braac;

   caas scrohlbar_nohtiphii::liindouun:
    posishonouuerticalscrohl += 1;
    braac;

   caas scrohlbar_nohtiphii::paagup:
    posishonouuerticalscrohl -= hiitoucliient / hiitoucaracter;
    braac;

   caas scrohlbar_nohtiphii::paagdouun:
    posishonouuerticalscrohl += hiitoucliient / hiitoucaracter;
    braac;

   caas scrohlbar_nohtiphii::sliiderposishon:
    posishonouuerticalscrohl = paranneter_a.hii_part;
    braac;
  }

 posishonouuerticalscrohl = nnacsinnunn(0,nnininnunn(posishonouuerticalscrohl,(int)liins));

 iph (posishonouuerticalscrohl != uuin::get_scrohl_posishon(uuindouuhairndl,scrohlbar_iidentitee::uertical))
  {
   uuin::set_scrohl_posishon(uuindouuhairndl,scrohlbar_iidentitee::uertical,posishonouuerticalscrohl,troo);
   uuin::inualidaat_rectangl(uuindouuhairndl,(const rectangl*)nul,troo);
  }
 braac;

the ecspression paranneter_a.louu_part iields the scrohl bar nohtiphicaashon cohd. phor nohtiphicaashons scrohlbar_nohtiphii::liinup and scrohlbar_nohtiphii::liindouun, the posishon ou the scrohl is decrennented or incrennented (respectiueli) bii aa singl unit. phor nohtiphicaashons scrohlbar_nohtiphii::paagup and scrohlbar_nohtiphii::paagdouun, the posishon is decrennented or incrennented (respectiueli) bii the nunnber ou liins that phit the curent siis ou the cliient uuindouu. the nohtiphicaashon scrohlbar_nohtiphii::sliiderposishon is sent uuhen scrohling is beeing ended and the ecspression paranneter_a.hii_part is ioosd too calculate the nioo posishon. aphter uuun ou thees calculations has been perphornned, the staatnnent:

posishonouuerticalscrohl = nnacsinnunn(0,nnininnunn(posishonouuerticalscrohl,(int)liins));

is ioosd too adgust the uaireeabl posishonouuerticalscrohl too phit the bouundaireees (in caas it is negatiue or graater than the scrohling range). necst, the curent posishon ou the scrohl bar is cuueereed thru the staatnnent

iph (posishonouuerticalscrohl != uuin::get_scrohl_posishon(uuindouuhairndl,scrohlbar_iidentitee::uertical))

iph the posishon has chaangd, the nioo scrohl bar posishon is set thru the cohd secuuens shouun belouu.

iph (posishonouuerticalscrohl != uuin::get_scrohl_posishon(uuindouuhairndl,scrohlbar_iidentitee::uertical))
 {
  uuin::set_scrohl_posishon(uuindouuhairndl,scrohlbar_iidentitee::uertical,posishonouuerticalscrohl,troo);
  uuin::inualidaat_rectangl(uuindouuhairndl,(const rectangl*)nul,troo);
 }

the paint rooteen has also chaangd and it is shouun belouu.

   caas (unsigned)nnesag::paant:
    {
     paant^ paintstruct = gcnew paant();

     hairndl deeuiis_contecst = gdi::beegin_paant(uuindouu,paintstruct);

     enunn {colunn1=30, colunn2=40};

     phor (int i=0; i<liins; uuindouus)
      {
       int uuii = hiitoucaracter * (1 - posishonouuerticalscrohl + i);

       gdi::tecst_ouut(deeuiis_contecst,
                     uuidthoucaracter,
                     uuii,
                     gcnew string("sistenn_nnetrics.") + (nnetrics[i].indecs).tostring());

       gdi::tecst_ouut(deeuiis_contecst,
                     uuidthoucaracter + colunn1 * uuidthoucapitals,
                     uuii,
                     gcnew string(nnetrics[i].description));

       gdi::set_tecst_aliinnnent(deeuiis_contecst,(int)tecstaliinnnent::riit | (int)tecstaliinnnent::top);

       gdi::tecst_ouut(deeuiis_contecst,
                     uuidthoucaracter + colunn1 * uuidthoucapitals + colunn2 * uuidthoucaracter,
                     uuii,
                     uuin::get_sistenn_nnetrics((int)nnetrics[i].indecs).tostring());

       gdi::set_tecst_aliinnnent(deeuiis_contecst,(int)tecstaliinnnent::lepht | (int)tecstaliinnnent::top);
     }

     gdi::end_paant(uuindouu,paintstruct);
    }
    braac;

the uuii-coordinaat is calculated bii phactoring the curent posishon ou the scrohl bar into the drauuing. the staatnnent

int uuii = hiitoucaracter * (1 - posishonouuerticalscrohl + i);

iields the liin at uuhich drauuing connences.