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I can't find the Example Demos

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  • I Offline
    I Offline
    iamcreasy
    wrote on last edited by
    #1

    I can't find the example demo in my QT installation.

    But I've installed it, as I can see it in the Maintain QT SDK.
    !http://i39.photobucket.com/albums/e179/iamcreasy/Untitled-2.jpg(Pic)!

    They are not under the Qt 4 submenu. As stated in the doc.

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    • S Offline
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      steno
      wrote on last edited by
      #2

      Now that seems odd...

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      • L Offline
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        loladiro
        wrote on last edited by
        #3

        You can always find them in the Examples subfolder of your QtSDK installation.

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        • I Offline
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          iamcreasy
          wrote on last edited by
          #4

          Yeh, the sources are there. But I was looking for an executable which allows the user to test the examples without going through the building process.

          I have used QT before, but that a long time ago. Then, it came with compiled examples.

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          • EddyE Offline
            EddyE Offline
            Eddy
            wrote on last edited by
            #5

            There is no executable for qtdemo anymore in the sdk.

            But as you have choosen to install them you should find a map with the sources and a .pro file.

            Your other choice is using qt Creator's welcome screen. That way you can open the same sources and compile there.

            It's a pity they are not installed anymore because they help a lot to find the right examples.

            Qt Certified Specialist
            www.edalsolutions.be

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            • I Offline
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              iamcreasy
              wrote on last edited by
              #6

              Is there any script or make file, using which, I can batch compile all of those? and make a single executable before, like what QT provided before.

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              • EddyE Offline
                EddyE Offline
                Eddy
                wrote on last edited by
                #7

                I haven't done it myself because i still have an old installation with the executable.

                But you should be able to compile it using
                @qmake -project
                make
                Install@
                In the directory where you find the qtdemo.pro file.(is that the correct Filename?,i'm just posting from my mobile wihout the sources at hand)

                Qt Certified Specialist
                www.edalsolutions.be

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                • I Offline
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                  iamcreasy
                  wrote on last edited by
                  #8

                  I tried to build the example (in QT Creator, Build > Build Project "examples") opening the examples.pro, but it gave me the following 4 warnings and errors.

                  Warning:
                  C:\QtSDK\Examples\examples-build-desktop\graphicsview\portedasteroids......\4.7\graphicsview\portedasteroids\ledmeter.cpp:-1: In member function 'virtual void KALedMeter::paintEvent(QPaintEvent*)':

                  C:\QtSDK\Examples\examples-build-desktop\graphicsview\portedasteroids......\4.7\graphicsview\portedasteroids\ledmeter.cpp:146: warning: comparison between signed and unsigned integer expressions

                  Error
                  :-1: error: cannot find -lpnp_basictoolsd

                  :-1: error: collect2: ld returned 1 exit status

                  and it stopped.

                  Why there would be any error.

                  Edit : Im gonna try with the demos.pro

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                  • I Offline
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                    iamcreasy
                    wrote on last edited by
                    #9

                    I tried with, demos.pro, it gives me the following error,

                    C:\QtSDK\Demos\demos-build-desktop\shared....\4.7\shared\arthurwidgets.cpp:54: error: private/qpixmapdata_p.h: No such file or directory

                    this shouldn't be! :(

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                    • L Offline
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                      loladiro
                      wrote on last edited by
                      #10

                      Same here regarding the demos (I didn't investigate any further though)

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                      • I Offline
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                        iamcreasy
                        wrote on last edited by
                        #11

                        got an idea, I can install the old version to get the demos. :D

                        but, that's not a solution anyway :P

                        @loladiro do you face the same thing for both examples.pro and demos.pro

                        there is another qtdemo.pro inside Demos/qtdemos, but it doesn't compile too.

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                        • J Offline
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                          jim_kaiser
                          wrote on last edited by
                          #12

                          @loladiro @creasy.. Let me clear this up.. AFAIK this is a difference in Qt sources in Linux and Windows. In linux, we have a seperate include folder with the headers.. The private folder in this include seems to exist in QtSDK/Desktop/Qt/471/gcc/ and QtSDK/Desktop/Qt/472/gcc/ but not the 473.

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                          • L Offline
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                            loladiro
                            wrote on last edited by
                            #13

                            Ok, -the examples are compiling without any problem and- the demo error is a "known bug":http://bugreports.qt.nokia.com/browse/QTSDK-636

                            Edit: @jim_kaiser: How come you always post when I'm just writing mine. But you're right, it is platform dependent (see also the bugreport I linked to). However, I still think that linking to private headers is bad practice since those are not part of the public API and can be changed or removed.

                            EDIT2: Correction. I was a little early to claim the examples were compiling. In fact I get the same error.

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                            • J Offline
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                              jim_kaiser
                              wrote on last edited by
                              #14

                              But hey... i just compiled the qtdemo.pro and it worked. Qt Creator 2.2.0 .. SDK 1.1.1

                              [Edit: Sorry.. I assumed we were talking about Linux.. Works in Linux. In Windows I should check.. tomorrow at work! But yeah mostly it should just be about adding an include directory maybe..]
                              [Edit again: Okay known bug... I shall rest..]

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                              • L Offline
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                                loladiro
                                wrote on last edited by
                                #15

                                I'm on Linux (Ubuntu), but according to the bug report, the private header file is not needed on Windows.

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                                • J Offline
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                                  jim_kaiser
                                  wrote on last edited by
                                  #16

                                  @loladiro: It doesn't compile on linux for you? Works for me.. And hehe... we do tend to post simultaneously! And yeah the private files are probably not needed.. We do link to one in our application at work... but we also maintain our patch in the related classes each version.. so thats okay :P. Could you check if using "QtGui/private/qpixmapdata_p.h" works? In case the sub dirs are not added in the include path. But if not needed on Windows as the bug report says.. can be commented i presume.

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                                  • I Offline
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                                    iamcreasy
                                    wrote on last edited by
                                    #17

                                    yeh, commented it out and with 4 warnings it compiles successfully. But, the output folder has a Makefile and a lot of other folders in it.

                                    Now what to do?

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                                    • J Offline
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                                      jim_kaiser
                                      wrote on last edited by
                                      #18

                                      If the compile completed successfully.. there should be an exe in the QtSDK/Demos/bin..?

                                      [Edit: On compiling the qtdemo.pro through QtCreator for desktop target, the exe was generated in that location..]

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                                      • I Offline
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                                        iamcreasy
                                        wrote on last edited by
                                        #19

                                        No bin folder is there. But, I guess the compiler's setting is different here.

                                        Files are I guess here,

                                        Demos\demos-build-desktop\browser\release

                                        I have some *.exe files.(Demos\demos-build-desktop\browser\release\browser.exe) but, whenever I try to run any executable, I get the following error,

                                        "The program cann't start because mingwm10.dll is missing form your computer. Try reinstalling the program to fix this problem."

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                                        • I Offline
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                                          iamcreasy
                                          wrote on last edited by
                                          #20

                                          I added "C:\QtSDK\mingw\bin;C:\QtSDK\Desktop\Qt\4.7.3\mingw\bin;" to windows PATH, now things are working fine.But, 2 issues

                                          1. No dedicated OpenGL Examples as they were before
                                          2. No global example browsing context.

                                          :-s

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