#Windows mouse coordinates pro#

XYOUTS, X, Y, TEXT, /NORMAL, /NOCLIP ENDĪt the command line, set TEXT equal to the string of text you want to appear in the window. The NOCLIP keyword is used to ensure that the text will appear even if it is outside the plotting region.

#Windows mouse coordinates pro#

The second simple procedure can be used to label plots using the cursor to position the text: Text is the string to be written on the screen: PRO LABEL, TEXT Ask the user to mark the position: PRINT, 'Use the mouse to mark the text position:' Get the cursor position after pressing any button: CURSOR, X, Y, /NORMAL, /DOWN Write the text at the specified position. WHILE (!MOUSE.button NE 4) DO BEGIN CURSOR, X1, Y1, /NORM, /DOWN PLOTS,, /NORMAL X = X1 & Y = Y1 ENDWHILE END Make the current second point be the new first. PRO EX_DRAW Start with a blank screen: ERASE Get the initial point in normalized coordinates: CURSOR, X, Y, /NORMAL, /DOWN Repeat until right button is pressed. Straight lines are connected to positions marked with the left or middle mouse buttons until the right button is pressed. The first routine is a simple drawing program. The following two programs demonstrate simple applications of the interactive graphics cursor and the CURSOR procedure. To label the location, enter: XYOUTS, X, Y, 'X marks the spot.', /DEVICE The position of the cursor in device coordinates is stored in the variables X and Y. Move the cursor over the graphics window and press the mouse button. ExamplesĪctivate the graphics cursor, select a point in the graphics window, and return the position of the cursor in device coordinates. Bit 0 is the leftmost button (value = 1), bit 1 is the middle button (value = 2), and bit 3 is the rightmost button (value = 4) for the typical three-button mouse. Each mouse button is assigned a bit in the button field. When CURSOR returns, the button field of the system variable !MOUSE is set to the button status. Normally, the position is reported in data coordinates, but the DATA, DEVICE, and NORMAL keywords can be used to explicitly specify the coordinate system. The X and Y arguments are named variables that receive the cursor position. If no mouse buttons are present, CURSOR waits for a key on the keyboard to be pressed. On devices that have a mouse, CURSOR normally waits until a mouse button is pressed (or already down). CURSOR enables the graphic cursor on the device and optionally waits for the operator to position it. Note that not all graphics devices have interactive cursors. The CURSOR procedure is used to read the position of the interactive graphics cursor from the current graphics device.