move image on the screen.

[dabayi]

Hallo!

I need another help on how to move an image (in the art from scrolling) when this is bigger than the screen. I don't want to use a scrollbar panel or something like that but just move the image on the screen with the mouse pointer.

thanks in advance for helping.

James

 

[seanbo]

place the image in a Panel of equal size. set your image as its background. listen for the panel's mouse up, mouse down and mouse move events. declare these variables globally:

int mx, my;
bool drag
// mouse x and y, and a drag state;

set the ints to anything, and the bool to false in the constructor, then do these things during the apropriate events:

private void panel1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e){
pxa = panel1.Location.X;
pya = panel1.Location.Y;
drag = true;
}

private void panel1_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e){
drag = false;
}

private void panel1_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e){
if(drag){
panel1.Location = new Point(panel1.Location.X + e.X - mxa, panel1.Location.Y + e.Y - mya);
}
}

bingo.