How change key of a loop?

When I audition loops -- both MIDI (green) and Audio (blue) -- I see that I can play them in a different key than how they are listed.
Once I drag that loop to a track, how do I then manipulate the key that it is in?
Thanks.

Select the region (loop) in the Arrange. On the left is Region Inspector with settings to transpose the region up or down.
Or in Global Tracks right click and select to show the Transposition global track. Here you can transpose all regions in specific parts of the arrangement.
JG

Similar Messages

Changing key in Logic Loops...

I'm able to change key in the loops, but once I drag that loop, in it's changed key, to my track, the sound reverts back to the original key. How do I record the loop in the changed key? Thanks!

Select the region and choose Region > Bounce in place
or solo the track and set the cycle area to fit the region (apple loop) and choose file > Bounce

Changing keys in apple loops

I just bought GB3. I can make simple songs with loops and I have no problem using my guitar via Imic. Is there a way to change the keys on the loops? For example, if I am recording a simple blues progression of C,F G and using the same drum loop I want to use C, D, G, C. So far, I haven't figured out how to do this. Is it possible?
Thanks
Kenny

You can adjust the loop's pitch in halftone steps with a slider in the editor window. So if you have a loop in C, setting the slider to +5 (or -7) will turn it to F, +7 (or -5) to G.
Don't expect spectacular results, though. Pitch-shifting an audio loop also alters its tonal characteristics, anything beyond 2 steps tends to sound unnatural.

Changing key of a loop?

Can I change the key of a loop (say, from A to D) to accompany tune, so that the same loop is used in the track in different keys?

Yes, you can.
Add a new copy of your loop to the track in the timeline, select it, and in the track editor enable "follow tempo and pitch" (for real instrument loops) and adjust the pitch slider. You will see the transposition in the lower left corner of the loop (in half note steps).
Regards
Léonie

How do you make a photo in DW that changes automatically in a loop and needs no visable buttons

How do you make a photo in DW that changes automatically in a loop and needs no visable buttons?

I'm sorry to be so vague. I have recently found out that what I want
to do is put my images in a javascript image rotator. I have looked
this up on google and have now tried about 6 different codes. I try to
follow the insert directions but I must be doing something wrong. I
get the first photo linked up but can never make the picture change to
show the other two photos in the image folder.
Can you direct me as to how this works in dw?
Thank you so much for helping.
Pam

In our program, we are concerned about reducing CPU work; how to wait until a boolean condition changes in a "while loop"?

Is there a way to wait until a boolean condition changes (instruction is sent) in a "while loop" (because I want the program run until I press exit button)? Now it is consuming a lot of CPU because it is running the loop very fast waiting for instructions unless I stop the program.
Thank you.

Use /functions/time and dialog/wait until next millisecond multiple in the
loop. Input 100ms.
"mcdesm" wrote in message
news:[email protected]..
> In our program, we are concerned about reducing CPU work; how to wait
> until a boolean condition changes in a "while loop"?
>
> Is there a way to wait until a boolean condition changes (instruction
> is sent) in a "while loop" (because I want the program run until I
> press exit button)? Now it is consuming a lot of CPU because it is
> running the loop very fast waiting for instructions unless I stop the
> program.
>
> Thank you.

Please provide me how change the Materil using BAPI...?

Hi Guru's,
could please provide me how change the Materil using BAPI...
please provide the BPAI name and step by step process...
if ou provide any program logic that would be helpfull to me...
thanks in advance
Srinivas....

Hi,
THis is code .
*& Report Zs_MATMAS_BAPI
*& This program demonstrates how easy it is to create Material master
*& data using BAPI_MATERIAL_SAVEDATA
*& The program also generates a report post-execution displaying errors
*& as well as successful uploads
REPORT Zs_MATMAS_BAPI.
TABLES
FLAGS *
DATA: F_STOP. " Flag used to stop processing
DATA DECLARATIONS *
DATA : V_EMPTY TYPE I, " No. of empty records
V_TOTAL TYPE I. " Total no. of records.
STRUCTURES & INTERNAL TABLES
*BAPI structures
DATA: BAPI_HEAD LIKE BAPIMATHEAD, " Header Segment with Control Information
BAPI_MAKT LIKE BAPI_MAKT, " Material Description
BAPI_MARA1 LIKE BAPI_MARA, " Client Data
BAPI_MARAX LIKE BAPI_MARAX, " Checkbox Structure for BAPI_MARA
BAPI_MARC1 LIKE BAPI_MARC, " Plant View
BAPI_MARCX LIKE BAPI_MARCX, " Checkbox Structure for BAPI_MARC
BAPI_MBEW1 LIKE BAPI_MBEW, " Accounting View
BAPI_MBEWX LIKE BAPI_MBEWX, " Checkbox Structure for BAPI_MBEW
BAPI_RETURN LIKE BAPIRET2. " Return Parameter
*--- Internal table to hold excel file data
DATA: IT_INTERN TYPE ALSMEX_TABLINE OCCURS 0 WITH HEADER LINE.
*--- Internal table to hold Matetrial descriptions
DATA: BEGIN OF IT_MAKT OCCURS 100.
        INCLUDE STRUCTURE BAPI_MAKT.
DATA: END OF IT_MAKT.
*--- Internal to hold the records in the text file
DATA : BEGIN OF IT_DATA OCCURS 100,
            WERKS(4), " Plant
            MTART(4), " Material type
            MATNR(18), " Material number
            MATKL(9) , " Material group
            MBRSH(1), " Industry sector
            MEINS(3), " Base unit of measure
            GEWEI(3), " Weight Unit
            SPART(2), " Division
            EKGRP(3), " Purchasing group
            VPRSV(1), " Price control indicator
            STPRS(12), " Standard price
            PEINH(3), " Price unit
            SPRAS(2), " Language key
            MAKTX(40), " Material description
            END OF IT_DATA.
SELECTION SCREEN. *
SELECTION-SCREEN BEGIN OF BLOCK SCR1 WITH FRAME TITLE TEXT-111.
PARAMETER : P_FILE TYPE RLGRAP-FILENAME OBLIGATORY DEFAULT " Input File
'C:\Material_master.XLS'.
PARAMETER : P_MAX(4) OBLIGATORY DEFAULT '100'. " no.of recs in a session
PARAMETERS: P_HEADER TYPE I DEFAULT 0. " Header Lines
PARAMETERS: P_BEGCOL TYPE I DEFAULT 1 NO-DISPLAY,
P_BEGROW TYPE I DEFAULT 1 NO-DISPLAY,
P_ENDCOL TYPE I DEFAULT 100 NO-DISPLAY,
P_ENDROW TYPE I DEFAULT 32000 NO-DISPLAY.
SELECTION-SCREEN END OF BLOCK SCR1.
AT SELECTION-SCREEN *
AT SELECTION-SCREEN ON VALUE-REQUEST FOR P_FILE.
*--- Validating file
PERFORM VALIDATE_FILE USING P_FILE.
START-OF-SELECTION
START-OF-SELECTION.
*--- Perform to convert the Excel data into an internal table
PERFORM CONVERT_XLS_ITAB.
IF NOT IT_DATA[] IS INITIAL.
*--- Perform to delete Header lines
    PERFORM DELETE_HEADER_EMPTY_RECS.
ENDIF.
END OF SELECTION. *
END-OF-SELECTION.
*--- Perform to upload Material Master data
PERFORM UPLOAD_MATMAS.
Form : validate_input_file
Description : To provide F4 help for file if read from PC
FORM VALIDATE_FILE USING F_FILE TYPE RLGRAP-FILENAME.
CALL FUNCTION 'KD_GET_FILENAME_ON_F4'
    CHANGING
      FILE_NAME     = F_FILE
    EXCEPTIONS
      MASK_TOO_LONG = 1
      OTHERS        = 2.
IF SY-SUBRC 0.
    MESSAGE S010(ZLKPL_MSGCLASS). " 'Error in getting filename'.
ENDIF.
ENDFORM. " validate_input_file
*& Form CONVER_XLS_ITAB
text
FORM CONVERT_XLS_ITAB.
CALL FUNCTION 'ALSM_EXCEL_TO_INTERNAL_TABLE'
    EXPORTING
      FILENAME    = P_FILE
      I_BEGIN_COL = P_BEGCOL
      I_BEGIN_ROW = P_BEGROW
      I_END_COL   = P_ENDCOL
      I_END_ROW   = P_ENDROW
    TABLES
      INTERN      = IT_INTERN.
IF SY-SUBRC 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
*--- Perform to move the data into an internal data
PERFORM MOVE_DATA.
ENDFORM. " CONVERT_XLS_ITAB
*& Form MOVE_DATA
text
FORM MOVE_DATA.
DATA : LV_INDEX TYPE I.
FIELD-SYMBOLS <FS>.
*--- Sorting the internal table
SORT IT_INTERN BY ROW COL.
CLEAR IT_INTERN.
LOOP AT IT_INTERN.
    MOVE IT_INTERN-COL TO LV_INDEX.
*--- Assigning the each record to an internal table row
    ASSIGN COMPONENT LV_INDEX OF STRUCTURE IT_DATA TO <FS>.
*--- Asigning the field value to a field symbol
    MOVE IT_INTERN-VALUE TO <FS>.
    AT END OF ROW.
      APPEND IT_DATA.
      CLEAR IT_DATA.
    ENDAT.
ENDLOOP.
ENDFORM. " MOVE_DATA
*& Form DELETE_HEADER_EMPTY_RECS
To delete the Header and empty records
FORM DELETE_HEADER_EMPTY_RECS.
DATA: LV_TABIX LIKE SY-TABIX.
IF NOT P_HEADER IS INITIAL.
    LOOP AT IT_DATA.
      IF P_HEADER > 0 AND NOT IT_DATA IS INITIAL.
        DELETE IT_DATA FROM 1 TO P_HEADER.
P_HEADER = 0.
        EXIT.
      ENDIF.
    ENDLOOP.
ENDIF.
CLEAR IT_DATA.
*--- To delete the empty lines from internal table
LOOP AT IT_DATA.
    LV_TABIX = SY-TABIX.
    IF IT_DATA IS INITIAL.
      V_EMPTY = V_EMPTY + 1.
      DELETE IT_DATA INDEX LV_TABIX..
    ENDIF.
ENDLOOP.
CLEAR IT_DATA.
*--- Total no of recs in file
DESCRIBE TABLE IT_DATA LINES V_TOTAL.
IF V_TOTAL = 0.
    MESSAGE I013(ZLKPL_MSGCLASS). " No records in the file
    F_STOP = 'X'.
    STOP.
ENDIF.
ENDFORM. " DELETE_HEADER_EMPTY_RECS
*& Form UPLOAD_MATMAS
to upload Material Master data
FORM UPLOAD_MATMAS .
LOOP AT IT_DATA.
Header
    UNPACK IT_DATA-MATNR TO IT_DATA-MATNR.
    BAPI_HEAD-MATERIAL = IT_DATA-MATNR.
    BAPI_HEAD-IND_SECTOR = IT_DATA-MBRSH.
    BAPI_HEAD-MATL_TYPE = IT_DATA-MTART.
    BAPI_HEAD-BASIC_VIEW = 'X'.
    BAPI_HEAD-PURCHASE_VIEW = 'X'.
    BAPI_HEAD-ACCOUNT_VIEW = 'X'.
Material Description
    REFRESH IT_MAKT.
    IT_MAKT-LANGU = IT_DATA-SPRAS.
    IT_MAKT-MATL_DESC = IT_DATA-MAKTX.
    APPEND IT_MAKT.
Client Data - Basic
    BAPI_MARA1-MATL_GROUP = IT_DATA-MATKL.
    BAPI_MARA1-BASE_UOM = IT_DATA-MEINS.
    BAPI_MARA1-UNIT_OF_WT = IT_DATA-GEWEI.
    BAPI_MARA1-DIVISION = IT_DATA-SPART.
    BAPI_MARAX-MATL_GROUP = 'X'.
    BAPI_MARAX-BASE_UOM = 'X'.
    BAPI_MARAX-UNIT_OF_WT = 'X'.
    BAPI_MARAX-DIVISION = 'X'.
Plant - Purchasing
    BAPI_MARC1-PLANT = IT_DATA-WERKS.
    BAPI_MARC1-PUR_GROUP = IT_DATA-EKGRP.
    BAPI_MARCX-PLANT = IT_DATA-WERKS.
    BAPI_MARCX-PUR_GROUP = 'X'.
Accounting
    BAPI_MBEW1-VAL_AREA = IT_DATA-WERKS.
    BAPI_MBEW1-PRICE_CTRL = IT_DATA-VPRSV.
    BAPI_MBEW1-STD_PRICE = IT_DATA-STPRS.
    BAPI_MBEW1-PRICE_UNIT = IT_DATA-PEINH.
    BAPI_MBEWX-VAL_AREA = IT_DATA-WERKS.
    BAPI_MBEWX-PRICE_CTRL = 'X'.
    BAPI_MBEWX-STD_PRICE = 'X'.
    BAPI_MBEWX-PRICE_UNIT = 'X'.
*--- BAPI to create material
    CALL FUNCTION 'BAPI_MATERIAL_SAVEDATA'
    EXPORTING
    HEADDATA = BAPI_HEAD
    CLIENTDATA = BAPI_MARA1
    CLIENTDATAX = BAPI_MARAX
    PLANTDATA = BAPI_MARC1
    PLANTDATAX = BAPI_MARCX
FORECASTPARAMETERS =
FORECASTPARAMETERSX =
PLANNINGDATA =
PLANNINGDATAX =
STORAGELOCATIONDATA =
STORAGELOCATIONDATAX =
VALUATIONDATA = BAPI_MBEW1
VALUATIONDATAX = BAPI_MBEWX
WAREHOUSENUMBERDATA =
WAREHOUSENUMBERDATAX =
SALESDATA = BAPI_MVKE1
SALESDATAX = BAPI_MVKEX
STORAGETYPEDATA =
STORAGETYPEDATAX =
    IMPORTING
    RETURN = BAPI_RETURN
    TABLES
    MATERIALDESCRIPTION = IT_MAKT
UNITSOFMEASURE =
UNITSOFMEASUREX =
INTERNATIONALARTNOS =
MATERIALLONGTEXT =
TAXCLASSIFICATIONS =
RETURNMESSAGES =
PRTDATA =
PRTDATAX =
EXTENSIONIN =
EXTENSIONINX =
    IF BAPI_RETURN-TYPE = 'E'.
      WRITE:/ 'Error:' ,BAPI_RETURN-MESSAGE ,'for material:' ,IT_DATA-MATNR.
    ELSEIF BAPI_RETURN-TYPE = 'S'.
      WRITE: 'Successfully created material' ,IT_DATA-MATNR.
    ENDIF.
ENDLOOP.
ENDFORM. " UPLOAD_MATMAS
Thanks
Sarada

Assigning Keys to Apple Loops in Logic

I am creating Apple Loops in Logic by selecting an audio region and then selecting "Add to Apple loops library" under the mini region menu.
The manual states that whatever key I set in Global tracks is the key that is assigned to the loop. This works well for pitched material, but for non pitched material I don't want a key designated. I have noticed that when I set a tag to the loop of "Drums" no key is assigned, but when I set a tag of "Percussion" the key does get assigned to the particular loop. This is a problem because the pitch of the percussion changes when that Apple Loop is brought back into another Logic session that has a different key assignment the a particular loop on the Global Track.
I understand I can designate "No Key" in the Apple Loops utility, but I prefer to make my loops straight from the Logic arrange window. I am finding the Apple Loops Utility a bit buggy. Does anyone know the most recent version of the Apple Loops Utility?
Thank you for your help.

Any word on a fix for this?
I've found Apple Loops VERY buggy in L9! Not only do they not loop correctly in the browser when your project is at a sample rate other than 44.1 (for example, working for broadcast at 48k as I mostly do), but I've also seen them behaving weirdly in the arrange page.
Today I had a truncated Apple Loop in a project which would play back differently on subsequent attempts. Sometimes it would get to bar 4, for example, and other times it would only get midway through bar 3...! And this is with basic Apple factory installed loops.
What's up with this? I've already re-indexed and re-installed the loops. No change. No fix.
Totally unprofessional, Apple.

How to set up the loop?

I am trying to create a Frame, using BorderLayout and every time we click the center button, it will change the color in one of the region. But I dont know how to set up the loop to make it change one at a time. Below is my draft......Thanks for helping.......
Test.java
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class Test extends Applet implements ActionListener
          Color []color={Color.red,Color.blue,Color.black,Color.green};
          private Button nb=new Button("North Button");
          private Button sb=new Button("South Button");
          private Button eb=new Button("East Button");
          private Button wb=new Button("West Button");
          private Button cb=new Button("Center Button");
          int buttonCount=0;
          public void init()
               setLayout(new BorderLayout());
               add(nb,"North");
               add(sb,"South");
               add(eb,"East");
               add(wb,"West");
               add(cb,"Center");
               cb.addActionListener(this);
               buttonCount=0;
          public void actionPerformed(ActionEvent e)
               for (int i=0;i<color.length;i++)
                    buttonCount++;
                    if (buttonCount%2==0)
                         nb.setBackground(color);
                    if (buttonCount%2==1)
                         sb.setBackground(color[i]);

declare a public variable count;
int count=0;
public void actionPerformed(ActionEvent e)
buttonCount++;
count++;
if(count==color.length)
count=0;
if (buttonCount%2==0)
nb.setBackground(color[count]);
if (buttonCount%2==1)
sb.setBackground(color[count]);
hope you got it.

Is there somebody out there to shed some light on this? Change keys, tempo in Soundtrack Pro greyed out?

From the amount of posted unanswered questions like mine one should be able to see that there are more than a few people confused about the greyed out "Change keys, tempo in Soundtrack Pro" (and for that matter in Apple Loops Utility, Logic, GarageBand)! What does it take to help out the less adept budding beginners? Please don't post read the manual or search for... we all know you can spend days with no results. There is nothing better than a friendly person (wizard) who knows and has done it all, giving clear step by step instructions. Please lay it out for us lesser brains. Thank you so much for your time and patience.

rs = stmt.executeQuery("SELECT gender FROM gymuser WHERE Username= 'userName' ");
in this line i think there is some error put it like this
rs = stmt.executeQuery("SELECT gender FROM gymuser WHERE Username= '"+userName+"' ");
Try to put some SOPs in between, so that u can check in logs(if using tomcat)where u r making mistake.

How to come out of loop at last record?

As I told in my previous posts,Iam transferring data from excel to zgkmaster tabel
table structure:
eid
ename
First I did SHDB(recording) and then made my BDC program.There are 10 records in table with names gopi,hari,rajesh.... with eid 1 to 10.My task is to updated all these names to 'XXX' for all 10 records (just for simple purpose).In my program I called 'Call transaction 'se11' using ptable mode 'A'.I moved from first screen to last screen (where you will update XXX and save for each record').Here:
Loop at ptable into otable
perform screens using <program name> <number> 'X'
perform fields using zgkmaster-ename , otable-ename
perform fields using 'BDC_OKCODE' , 'SAVE'
perform screens using <program name> <number> 'X'
perform fields using 'BDC_OKCODE' , 'NEXT'
endloop.
This code works fine in 'A' mode,but at last record a message comes 'Function code cannot be selected' (i think 'next' cannot be executed as it is last record) but all records are updated.
When the mode is changed to 'N' and 'E',nothing is saved and the same error 'Function code cannot be selected'.Due the this error whatever data we give before that is not saving into table,may be due to this error.
Now how shoud i make the loop exit when it reaches last record,i tried even with hardcording
if sy-index = 10.
leave prograam'
endif.
perform.....'NEXT' statement
But the program is not exiting,I dont know why?Can anyone help me,I think if i made the loop to exit before next statement for last record that error will not occur.advise me if anything wrong.
Thanks in advance
The problem is that
endloop

Hi..
1. To Terminate the LOOP in Last record.
    LOOP AT ITAB.
        << PROCESSING LOGIC>>
         AT LAST.
           EXIT.
         ENDAT.
    ENDLOOP.
2. It is necessary to Declare the Internal table with same structure as the Excel file
3. It is not necessary to call the Screen Explicitly before filling the BDCDATA record.
    If you want to process the Screen Twice the Fill the SAME SCREEN twice in BDCDATA Table and set the DYNBEGIN = 'X' in both the cases.
REWARD IF HELPFUL.

How to Edit names within Loop Library

I've edited a MIDI Apple Loop from Jam Packs and saved it as an MIDI Apple Loop in the library.
What I typed in as a name for the file is not what appeared in the loop library?
1. Why did the text alter from I typed?
2. How can I edite the name in the within loop library.
3. How do I delete apple loops I've created from the apple loop library?
Thank you
- I did look in the manual and within the user help in Logic, but could find nothing. I know I must be looking under the wrong 'key word' search.
What can I say!
Message was edited by: StyleSupport

StyleSupport wrote:
1. Why did the text alter from I typed?
You must select the green loop in the Arrange and go to Region menu "Add loop to the library" something like that or drag and drop the region to the Library in the Media dock.
This way a new dialog will show( see the picture below ) where you need to fill new "unique" name or to add some user (sub name), choose the group etc.
2. How can I edite the name in the within loop library.
3. How do I delete apple loops I've created from the apple loop library?
You "user" green loop is stored to ...user/Library/Audio/Apple Loops/User Loops.
Browse to this dir and edit or delete the loop.
You "user" green loop is stored to ...user/Library/Audio/Apple Loops/User Loops.
Browse to this dir ( you will find a folder labeled as "Single" or something like that open it ) and edit or delete the loop in question.
!http://img42.imageshack.us/img42/508/greenloops.gif!
!http://img59.imageshack.us/img59/4967/aglogo45.gif! [www.audiogrocery.com|http://www.audiogrocery.com]

How do you start a loop with an event and end the loop when u release ....

How do you start a loop with lets say an event of some sort, whether it be holding down a key or pressing the mouse click and then stopping the loop when you release that key or mouse button.?
double c = 1.8, i = 1, max = 90, exp = 0;
final double inc = 0.002; //speed at while it increases
boolean f = false, g = false;
while (true)
    while (f == false && stopMeter == false) //increasing speed going up to 90
        exp = Math.pow (c, i);
        i += inc;
        pAngle.setText (Math.round (exp) + "");
        if (exp > max)
            f = true;
            g = false;
        } //end if
    } //end while
    while (g == false && stopMeter == false) //decreasing speed going down from 90
        exp = Math.pow (c, i);
        i -= inc;
        pAngle.setText (Math.round (exp) + "");
        if (exp < 1)
            g = true;
            f = false;
        } //end if
    } //end while
} //end whilethis is a snippet of my increasing increments. Its for an angle meter. I can't get it to stop, when the user clicks or does something... the program just gets stuck in an infinite loop. I am still new to java and i do not know how to fix this.

You are in the wrong forum. Try this one instead: http://forum.java.sun.com/forum.jspa?forumID=31
/M

Garage Band '11, version 6.0.5 will not change key after new project is started

Garage Band '11 version 6.0.5: Cannot change key after new project is started.
It has always worked ok prior to this. And I have had other issues. How do I reinstall Garage Band '11?
I have looked in downloads, but can'ty find any download file. I had upgraded to Mac OSX 10.6.8 couple years back, which included
Garage Band '11, a new ITunes & new IPhoto.

Before reinstalling I'd try HangTime's fix for "oddball" problems and delete the User preferences and repair permissions, see the FAQ:
http://www.bulletsandbones.com/GB/FAQPages/OddBallProbs.html
The GarageBand 6.0.5 update is here:
GarageBand 6.0.5
If you want to reinstall, install again the GaragaBand application from your installation disk and then upgrade again to 6.05 using the link above or Software update from the Apple Menu.
Regards
Léonie

How to override the event loop

As a windows game developer, I have always overridden the application message loop to make sure that graphics were rendered when the CPU was idle, and still being able to process windows messages like keyboard/mouse events. CPU is then maxed out (except when a forced sleep or v-sync is enabled) to give highest performance on graphics, making a simple clear opengl window render at 3500 frames per second (I know this is idiotic but I'm trying to make a point).
Now that I'm porting my game engine (c++ code) to cocoa, I am struggling with how to implement the main loop. I could use a timer but this will fix the framerate and might be slow. It will prevent me to use the CPU to its full extent.
So: is there some kind of OnIdle event I can override? Or do I have to do the Event loop processing myself? And can anyone tell me how to do something like this? Is there a tutorial or a book or anything I can study to learn about this? I presume this is lower level API.
Any help is appreciated!
Dirk.

etresoft wrote:
Michael may profess ignorance about MacOS X applications, but he is still 100% correct. You need to study the architecture and find the best way to work with it. The first thing to know is that the CPU is irrelevant. Let the GPU handle your graphics - that is what it does best. You do want your CPU to be as idle as possible. Approach it from a device-driver or event-driven perspective.
Just to clarify that I'm not a total noob trying to write his first program: of course I will not overly use the CPU if not necessary. I completely agree with what you guys say about maximizing CPU usage. My game engine on windows will put the CPU to sleep when it's not necessary making my engine perform very good with almost no CPU usage.
But... when I want to test if changes to my engine/shaders/... improve or degrade performance of the renderings, I want to be sure that everything is maxed out so that I can be sure that the difference is correct. On maxed out CPU/GPU, I will notice the difference when framerate goes for example from 2000 to 1900 while this will not be visible when just at 60 fps and a lot of free time. I will see 60 fps even when my code is worse. That's why I need to be able to test this.
Anyway, as I said, I completely agree and I will certainly do my very best to make sure that CPU is not overly used. So my question remains: how can I make sure that I have everything I need at the time I need it while I will do my best to make sure nothing more is used?
Timer-events at 1/60th of a second is not the answer...
Using threads for these things is not the answer... I use them for other things (loading from disk/processing data/generating data)
But are there other options?
Can you point me to where I can learn more about the architecture and its possibilities?

How change key of a loop?

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