using InvalidateRect()

This is a discussion on using InvalidateRect() within the Windows Programming forums, part of the Platform Specific Boards category; ok, i've got a section of my window that i need to reprint with each iteration of my main while ...

  1. #1
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    using InvalidateRect()

    ok, i've got a section of my window that i need to reprint with each iteration of my main while loop, and i've created a rectangle to invalidate (declared it, put in the coordinates). its name is "rect". so, i then make the following call:

    Code:
    InvalidateRect(hwnd,rect,TRUE);
    however, it gives me the following error upon compilation:

    Code:
    'InvalidateRect' : cannot convert parameter 2 from 'struct tagRECT' to 'const struct tagRECT *'
    not sure whats going on, i just started programming win32 a few days ago, not exactly good yet. any help would be greatly appreciated. thanks a lot.

  2. #2
    Skunkmeister Stoned_Coder's Avatar
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    &rect
    Free the weed!! Class B to class C is not good enough!!
    And the FAQ is here :- http://faq.cprogramming.com/cgi-bin/smartfaq.cgi

  3. #3
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    awesome, thanks a lot

  4. #4
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    hmm...still not working.

    heres what i've got...

    Code:
    RECT rect={420,0,450,50};
    
    ............
    
    InvalidateRect(hwnd,&rect,TRUE);
    and it still does not redraw the rectangle within those coordinates. any ideas? thanks.

  5. #5
    Skunkmeister Stoned_Coder's Avatar
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    post your code. If large zip it up and attach.
    Free the weed!! Class B to class C is not good enough!!
    And the FAQ is here :- http://faq.cprogramming.com/cgi-bin/smartfaq.cgi

  6. #6
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    Add an UpdateWindow() after you have invalidated a region to tell windows to redraw.

    Use GetUpdateRect() in your WM_PAINT handler to recieve this area.
    "Man alone suffers so excruciatingly in the world that he was compelled to invent laughter."
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  7. #7
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    nevermind, i got it working.
    thanks guys.

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