Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. General and Desktop
  4. How to include .txt on Qt
Forum Updated to NodeBB v4.3 + New Features

How to include .txt on Qt

Scheduled Pinned Locked Moved Unsolved General and Desktop
196 Posts 11 Posters 138.8k Views 3 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • P Payx

    I tried something without you (sorry ahah)

    QLabel abc;
    abc.setPixmap(scaledPix);
    abc.show();
    
    

    it compiles but there is a error : QPixmap::scaled: Pixmap is a null pixmap

    mrjjM Offline
    mrjjM Offline
    mrjj
    Lifetime Qt Champion
    wrote on last edited by mrjj
    #125

    @Payx said in How to include .txt on Qt:

    scaledPix

    Sounds like scaledPix is not initialize as it should , which often
    comes from not being able to load a file.

    Make sure the image you are scaling, is indeed valid. (loaded)

    1 Reply Last reply
    0
    • P Offline
      P Offline
      Payx
      wrote on last edited by Payx
      #126

      Before posting, i've tried to just

      QPixmap pix(":/img/ballebleue.png")
      ui->setPixmap .....
      

      and it works

      u said "scaledPix is not initialize as it should ?"

      EDIT : Happy New Year !

      mrjjM 1 Reply Last reply
      0
      • P Payx

        Before posting, i've tried to just

        QPixmap pix(":/img/ballebleue.png")
        ui->setPixmap .....
        

        and it works

        u said "scaledPix is not initialize as it should ?"

        EDIT : Happy New Year !

        mrjjM Offline
        mrjjM Offline
        mrjj
        Lifetime Qt Champion
        wrote on last edited by
        #127

        @Payx

        Yes That would make the pix valid.

        To get the error " Pixmap is a null pixmap" for scaledPix means that
        it was not valid. It was empty. so if it came from a scale function, it means
        that the image u scaled to get scaledPix was empty.

        Happy new Year :)

        1 Reply Last reply
        0
        • P Offline
          P Offline
          Payx
          wrote on last edited by
          #128
          					QLabel abc;
          //          int Cost = ci.Cost;
          					QPixmap pix( ci.ImageName );
          					QPixmap scaledPix = pix.scaled(   8, 8,
          																				 Qt::KeepAspectRatio,
          																				 Qt::SmoothTransformation
          																				 );
          					abc.setPixmap(scaledPix);
          					abc.show();
          
          

          i have this :

          so the error come from "QPixmap pix" who is empty

          so the line "QPixmap pix( ci.ImageName );" dont create a pixmap from my QMap ?

          1 Reply Last reply
          0
          • mrjjM Offline
            mrjjM Offline
            mrjj
            Lifetime Qt Champion
            wrote on last edited by
            #129
            • QPixmap pix( ci.ImageName );" dont create a pixmap from my QMap ?

            That would be my guess yes.

            You can check pix with isNull()

            1 Reply Last reply
            0
            • P Offline
              P Offline
              Payx
              wrote on last edited by
              #130

              So i add the if :

              					if (pix.isNull()){
              					QPixmap pix(":/img/ballebleue.png");
              					};
              
              

              Same error as before "QPixmap::scaled: Pixmap is a null pixmap"

              mrjjM 1 Reply Last reply
              0
              • P Payx

                So i add the if :

                					if (pix.isNull()){
                					QPixmap pix(":/img/ballebleue.png");
                					};
                
                

                Same error as before "QPixmap::scaled: Pixmap is a null pixmap"

                mrjjM Offline
                mrjjM Offline
                mrjj
                Lifetime Qt Champion
                wrote on last edited by
                #131

                @Payx said in How to include .txt on Qt:

                if (pix.isNull()){
                QPixmap pix(":/img/ballebleue.png");
                };

                Well that would not really change anything as you create a new local pix and its not related to the "pix" outside
                You should find out if its invalid and then why it is

                if (pix.isNull()){
                qDebug() << "yep its no good";
                return;
                };

                1 Reply Last reply
                0
                • P Offline
                  P Offline
                  Payx
                  wrote on last edited by
                  #132

                  okay so i have that.

                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  QImage::pixel: coordinate (144,540) out of range
                  QImage::pixel: coordinate (145,540) out of range
                  QImage::pixel: coordinate (146,540) out of range
                  QImage::pixel: coordinate (147,540) out of range
                  QImage::pixel: coordinate (148,540) out of range
                  QImage::pixel: coordinate (149,540) out of range
                  QImage::pixel: coordinate (150,540) out of range
                  QImage::pixel: coordinate (151,540) out of range
                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  yep its no good
                  QImage::pixel: coordinate (168,540) out of range
                  QImage::pixel: coordinate (169,540) out of range
                  QImage::pixel: coordinate (170,540) out of range
                  QImage::pixel: coordinate (171,540) out of range
                  QImage::pixel: coordinate (172,540) out of range
                  QImage::pixel: coordinate (173,540) out of range
                  QImage::pixel: coordinate (174,540) out of range
                  QImage::pixel: coordinate (175,540) out of range
                  QImage::pixel: coordinate (168,541) out of range
                  QImage::pixel: coordinate (169,541) out of range
                  QImage::pixel: coordinate (170,541) out of range
                  QImage::pixel: coordinate (171,541) out of range
                  QImage::pixel: coordinate (172,541) out of range
                  QImage::pixel: coordinate (173,541) out of range
                  QImage::pixel: coordinate (174,541) out of range
                  QImage::pixel: coordinate (175,541) out of range
                  QImage::pixel: coordinate (168,542) out of range
                  QImage::pixel: coordinate (169,542) out of range
                  QImage::pixel: coordinate (170,542) out of range
                  QImage::pixel: coordinate (171,542) out of range
                  QImage::pixel: coordinate (172,542) out of range
                  QImage::pixel: coordinate (173,542) out of range
                  QImage::pixel: coordinate (174,542) out of range
                  
                  

                  that's mean that my pix is null right?

                  mrjjM 1 Reply Last reply
                  0
                  • P Payx

                    okay so i have that.

                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    QImage::pixel: coordinate (144,540) out of range
                    QImage::pixel: coordinate (145,540) out of range
                    QImage::pixel: coordinate (146,540) out of range
                    QImage::pixel: coordinate (147,540) out of range
                    QImage::pixel: coordinate (148,540) out of range
                    QImage::pixel: coordinate (149,540) out of range
                    QImage::pixel: coordinate (150,540) out of range
                    QImage::pixel: coordinate (151,540) out of range
                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    yep its no good
                    QImage::pixel: coordinate (168,540) out of range
                    QImage::pixel: coordinate (169,540) out of range
                    QImage::pixel: coordinate (170,540) out of range
                    QImage::pixel: coordinate (171,540) out of range
                    QImage::pixel: coordinate (172,540) out of range
                    QImage::pixel: coordinate (173,540) out of range
                    QImage::pixel: coordinate (174,540) out of range
                    QImage::pixel: coordinate (175,540) out of range
                    QImage::pixel: coordinate (168,541) out of range
                    QImage::pixel: coordinate (169,541) out of range
                    QImage::pixel: coordinate (170,541) out of range
                    QImage::pixel: coordinate (171,541) out of range
                    QImage::pixel: coordinate (172,541) out of range
                    QImage::pixel: coordinate (173,541) out of range
                    QImage::pixel: coordinate (174,541) out of range
                    QImage::pixel: coordinate (175,541) out of range
                    QImage::pixel: coordinate (168,542) out of range
                    QImage::pixel: coordinate (169,542) out of range
                    QImage::pixel: coordinate (170,542) out of range
                    QImage::pixel: coordinate (171,542) out of range
                    QImage::pixel: coordinate (172,542) out of range
                    QImage::pixel: coordinate (173,542) out of range
                    QImage::pixel: coordinate (174,542) out of range
                    
                    

                    that's mean that my pix is null right?

                    mrjjM Offline
                    mrjjM Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on last edited by
                    #133

                    @Payx
                    Yes this means that the pictures in the table cannot be loaded.
                    Are they in a resource ?

                    1 Reply Last reply
                    0
                    • P Offline
                      P Offline
                      Payx
                      wrote on last edited by
                      #134

                      Yes i have that exactly :http://hpics.li/cc11b5c

                      mrjjM 1 Reply Last reply
                      0
                      • P Payx

                        Yes i have that exactly :http://hpics.li/cc11b5c

                        mrjjM Offline
                        mrjjM Offline
                        mrjj
                        Lifetime Qt Champion
                        wrote on last edited by mrjj
                        #135

                        @Payx
                        Oh, they are under IMG

                        Right click one image file.
                        Find Get Path
                        should be something like

                        :/IMG/filename.xxx

                        Fix the names in the table.
                        As far as i recall they start like ":/filename.xxx" and that dont match.

                        alt text

                        Note: Here i do NOT have them in a sub folder like you have (img) so path is :/p1.png

                        1 Reply Last reply
                        0
                        • P Offline
                          P Offline
                          Payx
                          wrote on last edited by
                          #136
                          QMap<QRgb, CostInfo > Costs = {
                          	{ QColor(255 , 0 , 0 ).rgb(), { ":/img/fraise.png", 10 }},
                          	{ QColor(0 , 255 , 0 ).rgb(), { ":/img/balleverte.png", 20 }},	
                          	{ QColor(0 , 0 , 255 ).rgb(), { ":/img/balebleue.png", 20 }},
                          	{ QColor(255 , 255 , 255 ).rgb(), { ":/img/balleblanche.png", 20 }},
                          	{ QColor(255 , 128 , 0 ).rgb(), { ":/img/ballepeche.png", 20 }},
                          	{ QColor(0 , 0 , 0 ).rgb(), { ":/img/noir.png", 20 }},
                          	{ QColor(102 , 51 , 0 ).rgb(), { ":/img/marron.png", 20 }},
                          	{ QColor(255 , 102 , 78 ).rgb(), { ":/img/rose.png", 20 }},
                          	{ QColor(0 , 204 , 204 ).rgb(), { ":/img/turquoise.png", 20 }},
                          	{ QColor(255 , 178 , 102 ).rgb(), { ":/img/beige.png", 20 }},
                          	{ QColor(76 , 0 , 153 ).rgb(), { ":/img/violet.png", 20 }},
                          	{ QColor(100 , 100 , 100 ).rgb(), { ":/img/gris.png", 20 }},
                          };
                          
                          

                          i didnt mention that but i had already changed the path

                          mrjjM 1 Reply Last reply
                          0
                          • P Payx
                            QMap<QRgb, CostInfo > Costs = {
                            	{ QColor(255 , 0 , 0 ).rgb(), { ":/img/fraise.png", 10 }},
                            	{ QColor(0 , 255 , 0 ).rgb(), { ":/img/balleverte.png", 20 }},	
                            	{ QColor(0 , 0 , 255 ).rgb(), { ":/img/balebleue.png", 20 }},
                            	{ QColor(255 , 255 , 255 ).rgb(), { ":/img/balleblanche.png", 20 }},
                            	{ QColor(255 , 128 , 0 ).rgb(), { ":/img/ballepeche.png", 20 }},
                            	{ QColor(0 , 0 , 0 ).rgb(), { ":/img/noir.png", 20 }},
                            	{ QColor(102 , 51 , 0 ).rgb(), { ":/img/marron.png", 20 }},
                            	{ QColor(255 , 102 , 78 ).rgb(), { ":/img/rose.png", 20 }},
                            	{ QColor(0 , 204 , 204 ).rgb(), { ":/img/turquoise.png", 20 }},
                            	{ QColor(255 , 178 , 102 ).rgb(), { ":/img/beige.png", 20 }},
                            	{ QColor(76 , 0 , 153 ).rgb(), { ":/img/violet.png", 20 }},
                            	{ QColor(100 , 100 , 100 ).rgb(), { ":/img/gris.png", 20 }},
                            };
                            
                            

                            i didnt mention that but i had already changed the path

                            mrjjM Offline
                            mrjjM Offline
                            mrjj
                            Lifetime Qt Champion
                            wrote on last edited by mrjj
                            #137

                            @Payx
                            oh, it seems correct. You checked they are truly correct?

                            Please qDebug() << ci.ImageName to verify the variable contains the path from
                            the table.

                            just above where you try to make pixmap

                            qDebug() << "check me--->" << ci.ImageName;
                            QPixmap pix( ci.ImageName );

                            1 Reply Last reply
                            0
                            • P Offline
                              P Offline
                              Payx
                              wrote on last edited by
                              #138

                              I have

                              check me---> ""
                              

                              so there is nothing

                              i declared as QString ImageName
                              so maybe it is that ?

                              mrjjM 1 Reply Last reply
                              0
                              • P Payx

                                I have

                                check me---> ""
                                

                                so there is nothing

                                i declared as QString ImageName
                                so maybe it is that ?

                                mrjjM Offline
                                mrjjM Offline
                                mrjj
                                Lifetime Qt Champion
                                wrote on last edited by
                                #139

                                @Payx
                                Not sure. check the code that look it up.
                                If from table it should not be empty :)

                                1 Reply Last reply
                                0
                                • SGaistS Offline
                                  SGaistS Offline
                                  SGaist
                                  Lifetime Qt Champion
                                  wrote on last edited by
                                  #140

                                  Are you sure you are retrieving a valid value from your map ?

                                  Interested in AI ? www.idiap.ch
                                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                  1 Reply Last reply
                                  0
                                  • P Offline
                                    P Offline
                                    Payx
                                    wrote on last edited by Payx
                                    #141

                                    No it's sure that it's not a valid value !

                                    QPixmap pix( ci.ImageName );
                                    

                                    so it create a pix from a QString no ? that why it didnt work ?

                                    1 Reply Last reply
                                    0
                                    • SGaistS Offline
                                      SGaistS Offline
                                      SGaist
                                      Lifetime Qt Champion
                                      wrote on last edited by
                                      #142

                                      From what you wrote before, ci.ImageName is empty, correct ?

                                      If so, check the key that you use to retrieve the data from the map. If not part of the map, depending on the technique used, you will get a default constructed object.

                                      Interested in AI ? www.idiap.ch
                                      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                      1 Reply Last reply
                                      0
                                      • P Offline
                                        P Offline
                                        Payx
                                        wrote on last edited by
                                        #143

                                        Yes it's empty.

                                        			foreach( QRgb key, Costs.keys() ) {
                                        				QColor BaseColor( key );
                                        				if (Costs.contains( colour.rgb() ) || IsCloseColor(BaseColor, colour) )  {
                                        					CostInfo& ci = Costs[colour.rgb()];
                                        					QLabel abc;
                                        //          int Cost = ci.Cost;
                                        					qDebug() << "check me--->" << ci.ImageName;
                                        					QPixmap pix( ci.ImageName );
                                        					if (pix.isNull()){
                                        					qDebug() << "yep its no good";
                                        					return;
                                        					};
                                        					QPixmap scaledPix = pix.scaled(   8, 8,
                                        																				 Qt::KeepAspectRatio,
                                        																				 Qt::SmoothTransformation
                                        																				 );
                                        					abc.setPixmap(scaledPix);
                                        					abc.show();
                                        

                                        it's what i have.

                                        1 Reply Last reply
                                        0
                                        • SGaistS Offline
                                          SGaistS Offline
                                          SGaist
                                          Lifetime Qt Champion
                                          wrote on last edited by
                                          #144

                                          Your logic is flawed. If Costs contains colour.rgb() then you can go on with the rest of your logic else you should go through your map and use IsCloseColor to determine which key is good. Then you can use that key to go further.

                                          Interested in AI ? www.idiap.ch
                                          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                          1 Reply Last reply
                                          0

                                          • Login

                                          • Login or register to search.
                                          • First post
                                            Last post
                                          0
                                          • Categories
                                          • Recent
                                          • Tags
                                          • Popular
                                          • Users
                                          • Groups
                                          • Search
                                          • Get Qt Extensions
                                          • Unsolved