Public screen

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elfpipe

Public screen

Posted on: 2011/5/2 22:32 #1

Just can't stay away

Here we go again...

What is wrong with this picture?


#include <proto/exec.h>

#include <proto/intuition.h>



#include <stdio.h>

#include <stdlib.h>



int main()

{

//open default display

    struct Screen *qt_intuition_screen = IIntuition->OpenScreenTags (NULL,

                            SA_LikeWorkbench, TRUE,

                            SA_Type, PUBLICSCREEN,

                            SA_PubName, "QTPUBSCREEN",

                            SA_Title, "Qt 4.7.0",

                            SA_ShowTitle, TRUE,

                            //SA_Quiet, TRUE,

      TAG_END);



    if (!qt_intuition_screen)

    {

        printf("Failed to open public screen!\n");

        exit(-1);

    }



    struct Screen *scr = IIntuition->LockPubScreen("QTPUBSCREEN");

    if (!scr)

    {

        IIntuition->CloseScreen(qt_intuition_screen);

        printf("Failed to lock public screen\n");

        exit(-1);

    }



    struct Window *window = IIntuition->OpenWindowTags (NULL,



                                                WA_Left, 100,

                                                WA_Top, 100,

                                                WA_InnerWidth, 300,

                                                WA_InnerHeight, 300,



                                                WA_PubScreen, scr,

                                                WA_PubScreenName, "QTPUBSCREEN",



                                                //WA_UserPort, qt_intuition_port,

                                                WA_IDCMP, IDCMP_CLOSEWINDOW|

                                                          IDCMP_NEWSIZE|

                                                          IDCMP_MOUSEBUTTONS|

                                                          IDCMP_MOUSEMOVE|

                                                          IDCMP_CHANGEWINDOW|

                                                          //IDCMP_VANILLAKEY|

                                                          IDCMP_RAWKEY,

                                                //WA_Flags, WFLG_GIMMEZEROZERO,

                                                WA_GimmeZeroZero, TRUE,

                                                WA_ScreenTitle, "Qt 4.7.0",

                                                WA_Title, "Hello there ;-)",

                                                WA_DepthGadget, TRUE,

                                                WA_SizeGadget, TRUE,

                                                WA_DragBar, TRUE,

                                                WA_CloseGadget, TRUE,

                                                WA_Activate, TRUE,

                                                WA_SmartRefresh, TRUE,

                                                WA_RMBTrap, TRUE,

                                                WA_MinWidth, 1,

                                                WA_MinHeight, 1,

                                                WA_MaxWidth, 1920,

                                                WA_MaxHeight, 1080,

                                                WA_ReportMouse, TRUE,

                                                TAG_END, TAG_DONE

                                                );

    IIntuition->UnlockPubScreen(NULL, scr);



    if (!window)

    {

        IIntuition->CloseScreen(qt_intuition_screen);

        printf("Failed to open window on public screen!\n");

        exit(-1);

    }



    IIntuition->CloseWindow(window);

    IIntuition->CloseScreen(qt_intuition_screen);



    return (0);

}

It just returns "Failed to lock public screen". I know it used to work, that same piece of code, so what on earth could be the problem?? I have searched the RKM in vain...

Any help is highly appreciated!

Gazelle

Re: Public screen

Posted on: 2011/5/2 23:29 #2

Just popping in

intuition.library/OpenScreen:
SA_PubName: If this field is present (and ti_Data is non-NULL), it means that the screen is a public screen, and that the public screen name string is pointed to by ti_Data. Public screens are opened in "PRIVATE" mode and must be made public using PubScreenStatus( screen, 0 ).

intuition.library/LockPubScreen:
RESULT
screen - Returns pointer to a screen if successful or NULL. The call can fail for reasons including that the named public screen doesn't exist or is in private state.

So I guess a IIntuition->PubScreenStatus(qt_intuition_screen, 0) after the IIntuition->OpenScreenTags() should help.

xenic

Re: Public screen

Posted on: 2011/5/3 3:00 #3

Just can't stay away

Does he need to lock the screen at all in that case? No other programs should be able to lock the screen if it's in PRIVATE status. He should be able to just open his window after opening the screen and then use PubScreenStatus to allow other programs to lock the screen before opening windows on it.

elfpipe

Re: Public screen

Posted on: 2011/5/3 13:40 #4

Just can't stay away

@Gazelle

Thank you for the pointer, that solved the issue!

thomas

Re: Public screen

Posted on: 2011/5/3 13:44 #5

Not too shy to talk

Quote:

xenic wrote:
Does he need to lock the screen at all in that case? No other programs should be able to lock the screen if it's in PRIVATE status. He should be able to just open his window after opening the screen and then use PubScreenStatus to allow other programs to lock the screen before opening windows on it.

You are right. The owner of the screen does not need to lock it. Only visitors need to.

elfpipe

Re: Public screen

Posted on: 2011/5/3 17:50 #6

Just can't stay away

@xenic & thomas

Ok, good to know!

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