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could you post the relevant sections of your code please the LBUTTONDOWN and UP code?<br />

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could you post the relevant sections of your code please the LBUTTONDOWN and UP code?


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Norbert is right, Why I wanted to post your code is this, Now normally if you are storing the point in button up event and using Lineto in down event the line is drawn. But if in these events if you are calling Invalidate(), then all the drawn lines dissapear, You'll have to have a mechanism to store these points and draw lines in OnDraw()<br />

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Norbert is right, Why I wanted to post your code is this, Now normally if you are storing the point in button up event and using Lineto in down event the line is drawn. But if in these events if you are calling Invalidate(), then all the drawn lines dissapear, You'll have to have a mechanism to store these points and draw lines in OnDraw()


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I am trying to draw line between points LBUTTONDOWN and LBUTTONUP.But cannot retain the previous line when trying to draw the subsequent line.How can i retain the previous lines on the screen.
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I am trying to draw line between points LBUTTONDOWN and LBUTTONUP.But cannot retain the previous line when trying to draw the subsequent line.How can i retain the previous lines on the screen.

To retain a line on the screen.

Kernel and system programming is the process of creating the software necessary for a computer or device to function and operate other programs. Some operating systems (such as Microsoft Windows) are proprietary, but others, such as the various Linux distributions, are open source.