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  4. How to use LoadBitmap in a dialog box

How to use LoadBitmap in a dialog box

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graphicstutoriallearning
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  • C chandu004

    how many images you have to the max.

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    Y Offline
    yaminisridaran
    wrote on last edited by
    #14

    I have two images.I has to toggle according to the mouse movement. I nned to know how to get the dc of the dialog control.Please S.Yamini

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    • B Bhavesh Bagadiya

      after onInitdialog completes, whole dialog being repainted so your graphics erased. one solution is to override OnEraseBkgnd and return TRUE from it so System will never erase background. but be careful, system never erase Background !!

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      Y Offline
      yaminisridaran
      wrote on last edited by
      #15

      I cannot use erasebk bcoz i have to toggle the images. S.Yamini

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      • Y yaminisridaran

        I cannot use erasebk bcoz i have to toggle the images. S.Yamini

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        Bhavesh Bagadiya
        wrote on last edited by
        #16

        so whats problem will be in toggling images after overriding eraseBk ??? whatever painting done by you will be there, only system won't paint its default bkground ...

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        • C chandu004

          how many images you have to the max.

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          C Offline
          chandu004
          wrote on last edited by
          #17

          are you using the bitmap control you have in your tool bar, or is it ok for you if i give my active X control which can take any bitmap image any time. what all you have to do is, you have to specify the file path. for example, ctrl.SetImage("C:\\image1.bmp"); then after some time, ctrl.SetImage("C:\\image2.bmp"); is it ok for u.

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          • Y yaminisridaran

            I have two images.I has to toggle according to the mouse movement. I nned to know how to get the dc of the dialog control.Please S.Yamini

            C Offline
            C Offline
            chandu004
            wrote on last edited by
            #18

            assign a member variable to that control, then, m_ctrl.GetDC();

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            • B Bhavesh Bagadiya

              so whats problem will be in toggling images after overriding eraseBk ??? whatever painting done by you will be there, only system won't paint its default bkground ...

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              Y Offline
              yaminisridaran
              wrote on last edited by
              #19

              Yes it will work. Can u suggest me for transparenting the background for the button control S.Yamini

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              • Y yaminisridaran

                Yes it will work. Can u suggest me for transparenting the background for the button control S.Yamini

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                B Offline
                Bhavesh Bagadiya
                wrote on last edited by
                #20

                again, You can override OnEraceBk,, and return TRUE from there for that button, it won't paint buton background...

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                • B Bhavesh Bagadiya

                  again, You can override OnEraceBk,, and return TRUE from there for that button, it won't paint buton background...

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                  Y Offline
                  yaminisridaran
                  wrote on last edited by
                  #21

                  Thanks I will try S.Yamini

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                  • Y yaminisridaran

                    I have to load a bitmap in a dialog box. I have loaded the Image in bitmap resource and then I tried the below code HBITMAP hBitmap=(HBITMAP)LoadBitmap(AfxGetInstanceHandle,"IDB_IMAGE"); but when i execute this statement the hBitmap is 0x0000000. Can anyone give me some suggestions. Is there any way to transparent the background of a button S.Yamini

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                    H Offline
                    Hamid Taebi
                    wrote on last edited by
                    #22

                    If you have bmp on the resource you can use of CBitmap class.

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                    • H Hamid Taebi

                      If you have bmp on the resource you can use of CBitmap class.

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                      Y Offline
                      yaminisridaran
                      wrote on last edited by
                      #23

                      Thanks. Is there any calculation to convert the x,y coordinate of the CPoint to angle of the circle S.Yamini

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