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  4. Update only a particial area of a View with UpdateAllViews(...)

Update only a particial area of a View with UpdateAllViews(...)

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  • C CrocodileBuck

    Hi Mr. Salsbery, i tried

    InvalidateRect((LPCRECT)pHint, TRUE);
    

    but it won't work :( Thanx for all your help Croc

    M Offline
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    Mark Salsbery
    wrote on last edited by
    #10

    What does "won't work" mean? If you're using a rect of (100,100,100,100) then nothing will happen, since the rect has no dimensions (width and height are 0). Try a valid rect! :) Mark

    Mark Salsbery Microsoft MVP - Visual C++ :java:

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    • M Mark Salsbery

      What does "won't work" mean? If you're using a rect of (100,100,100,100) then nothing will happen, since the rect has no dimensions (width and height are 0). Try a valid rect! :) Mark

      Mark Salsbery Microsoft MVP - Visual C++ :java:

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      CrocodileBuck
      wrote on last edited by
      #11

      Hi, yes thats right but i tried it with

      CRect MyRect(0,0, 200, 150);
      CObject\* pHint = (CObject\*)&MyRect;
      

      and this fails too! Manx thanx and best regards Croc

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      • C CrocodileBuck

        Hi, yes thats right but i tried it with

        CRect MyRect(0,0, 200, 150);
        CObject\* pHint = (CObject\*)&MyRect;
        

        and this fails too! Manx thanx and best regards Croc

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        Mark Salsbery
        wrote on last edited by
        #12

        What does "fails" mean? Doesn't compile? Crashes at runtime? Nothing happens? It marks the area for updating. The next WM_PAINT message will update that area. If the same exact data is drawn as on the last WM_PAINT, you're not going to see a difference.

        Mark Salsbery Microsoft MVP - Visual C++ :java:

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        • M Mark Salsbery

          What does "fails" mean? Doesn't compile? Crashes at runtime? Nothing happens? It marks the area for updating. The next WM_PAINT message will update that area. If the same exact data is drawn as on the last WM_PAINT, you're not going to see a difference.

          Mark Salsbery Microsoft MVP - Visual C++ :java:

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          C Offline
          CrocodileBuck
          wrote on last edited by
          #13

          I Mean nothin happens! Ahhh the InvalidateRect() hasn't to do something with the text printed in the RTFCtrl on the View ???!!! What can i do that i can see a little difference ????? Many many thanx for your help and best regards :) Croc

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          • C CrocodileBuck

            I Mean nothin happens! Ahhh the InvalidateRect() hasn't to do something with the text printed in the RTFCtrl on the View ???!!! What can i do that i can see a little difference ????? Many many thanx for your help and best regards :) Croc

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            Mark Salsbery
            wrote on last edited by
            #14

            CrocodileBuck wrote:

            What can i do that i can see a little difference ?

            You need to change something between calls to UpdateAllViews() if you want to see something different in the view. What are your views drawing? Something from the document? If so, change the document.

            Mark Salsbery Microsoft MVP - Visual C++ :java:

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            • M Mark Salsbery

              CrocodileBuck wrote:

              What can i do that i can see a little difference ?

              You need to change something between calls to UpdateAllViews() if you want to see something different in the view. What are your views drawing? Something from the document? If so, change the document.

              Mark Salsbery Microsoft MVP - Visual C++ :java:

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              C Offline
              CrocodileBuck
              wrote on last edited by
              #15

              I will only print Text (SetWindowText) in the View !!!???? Many many thanks and best regards Croc

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              • C CrocodileBuck

                I will only print Text (SetWindowText) in the View !!!???? Many many thanks and best regards Croc

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                Mark Salsbery
                wrote on last edited by
                #16

                Only you know what's going on in your views. The text data must be coming from somewhere... Change it and update the views! And make sure changing it doesn't already cause an update implicitly, or you still won't see anything. If the view is a window not in your control (where you don't do the painting, like an edit control), then you may not have control over updating regions of the window. If you are doing the painting in your view, look at the invalid rect in the WM_PAINT handler - you should see that your update rect is there. What you do with that info in your painting code is up to you. Mark

                Mark Salsbery Microsoft MVP - Visual C++ :java:

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                • M Mark Salsbery

                  Only you know what's going on in your views. The text data must be coming from somewhere... Change it and update the views! And make sure changing it doesn't already cause an update implicitly, or you still won't see anything. If the view is a window not in your control (where you don't do the painting, like an edit control), then you may not have control over updating regions of the window. If you are doing the painting in your view, look at the invalid rect in the WM_PAINT handler - you should see that your update rect is there. What you do with that info in your painting code is up to you. Mark

                  Mark Salsbery Microsoft MVP - Visual C++ :java:

                  C Offline
                  C Offline
                  CrocodileBuck
                  wrote on last edited by
                  #17

                  Ok. Thanx, iwill try it ! Tomorrow i will mail my success or ... ;( ;) Many many thanx and best regards Croc

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                  • C CrocodileBuck

                    I will only print Text (SetWindowText) in the View !!!???? Many many thanks and best regards Croc

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                    David Crow
                    wrote on last edited by
                    #18

                    What class is your view derived from?

                    "Love people and use things, not love things and use people." - Unknown

                    "To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

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                    • M Mark Salsbery

                      Only you know what's going on in your views. The text data must be coming from somewhere... Change it and update the views! And make sure changing it doesn't already cause an update implicitly, or you still won't see anything. If the view is a window not in your control (where you don't do the painting, like an edit control), then you may not have control over updating regions of the window. If you are doing the painting in your view, look at the invalid rect in the WM_PAINT handler - you should see that your update rect is there. What you do with that info in your painting code is up to you. Mark

                      Mark Salsbery Microsoft MVP - Visual C++ :java:

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                      L Offline
                      led mike
                      wrote on last edited by
                      #19

                      You are in deep deep shit at this point dude. Maybe you should just treat the buck to a Filet-O-Fish and call it a day. :-D I'm outta here, have a great weekend! :beer:

                      led mike

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                      • L led mike

                        You are in deep deep shit at this point dude. Maybe you should just treat the buck to a Filet-O-Fish and call it a day. :-D I'm outta here, have a great weekend! :beer:

                        led mike

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                        M Offline
                        Mark Salsbery
                        wrote on last edited by
                        #20

                        Cheers! :beer:

                        Mark Salsbery Microsoft MVP - Visual C++ :java:

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                        • D David Crow

                          What class is your view derived from?

                          "Love people and use things, not love things and use people." - Unknown

                          "To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

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                          CrocodileBuck
                          wrote on last edited by
                          #21

                          fom CView !

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                          • C CrocodileBuck

                            fom CView !

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                            David Crow
                            wrote on last edited by
                            #22

                            CrocodileBuck wrote:

                            fom CView !

                            And you're using SetWindowText()? I've not ever tried that, but it just seems odd.

                            "Love people and use things, not love things and use people." - Unknown

                            "To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

                            1 Reply Last reply
                            0
                            • L led mike

                              You are in deep deep shit at this point dude. Maybe you should just treat the buck to a Filet-O-Fish and call it a day. :-D I'm outta here, have a great weekend! :beer:

                              led mike

                              B Offline
                              B Offline
                              Bram van Kampen
                              wrote on last edited by
                              #23

                              The Server stalled posting this one, (and crashed my Laptop) Tought it was Lost. Good for You, Enjoy

                              Bram van Kampen

                              modified on Saturday, July 12, 2008 9:02 PM

                              1 Reply Last reply
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                              • L led mike

                                You are in deep deep shit at this point dude. Maybe you should just treat the buck to a Filet-O-Fish and call it a day. :-D I'm outta here, have a great weekend! :beer:

                                led mike

                                B Offline
                                B Offline
                                Bram van Kampen
                                wrote on last edited by
                                #24

                                led mike wrote:

                                I'm outta here, have a great weekend!

                                Just Enjoy, You Deserve. Wish I was there thoug, Regards :mad:

                                Bram van Kampen

                                1 Reply Last reply
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