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input from a mouse

Started by quadrafuzz Aug 17, 2001 at 6:43 PM 1 replies 400+ views

Original Post

Aug 17, 2001 at 6:43 PM

I''m trying to use directinput to have little bitmaps disappear when they are clicked on. How do I test the entire bitmap rectangle to see whether it should disappear or not? I have a struct with the x and y positions stored in it and right now I''m testing whether the x and y coordinates match those of the mouse when the left mouse button is clicked and if they match the bitmap disappears, however, this isn''t working. How do I get the bitmap to disappear when you click anywhere within the bitmap rectangle while the left mouse button is clicked? Any help is appreciated. quad

fredjordans

Aug 17, 2001 at 7:03 PM

Well, assuming that you know the height and width of your bitmap, you can just use an if then statement as follows:

if mouse.button[0]
{
if mouse.x > bitmap.x And mouse.x < mouse.x+width And mouse.y > bitmap.y And mouse.y < mouse.y+height Then DeleteBitmap
}

where 0 represents the left mouse button.

I assume you know the syntax for If Then statements... I also assume that you understand DirectINput and how to check for x, y, and left click. if not, let me know.

QBRADQ

Aug 18, 2001 at 3:44 AM

Also note that you must overwrite the section on the displayed surface with your background color or image, other wise it will still be displayed.

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