Ima_Motion

The "Ima_Motion()" function is called whenever the mouse is moved while the cursor is over an image window.

Syntax

extern "C" __declspec(dllexport) int Ima_Motion(

HWND wnd,

SliceO_Window *window

int up_down,

short x, short y

)

Parameters

wnd

A handle to the interface's window

window

A pointer to the "Window" structure of the image window receiving the action.

up_down

is an image of the 3 mouse button states. The lower byte contain a code giving the mouse button action (off, on, pressed or double clicked). The next byte give the state of each of the 3 keys as on or off. The different values for the variable are:

KEY_DBLCLK 3

KEY_PRESS 2

KEY_ON 1

KEY_OFF 0

MOUSE_KEY_LEFT 0x010

MOUSE_KEY_MIDDLE 0x020

MOUSE_KEY_RIGHT 0x040

So, for example, if you click on the left mouse button, the value of up_down will be (KEY_PRESS | MOUSE_KEY_LEFT). When you release the button the value will be KEY_OFF.

x, y

Horizontal (x) and vertical (y) position of the cursor within the current window. (0,0 at bottom left)

Return value

The function returns "1" if the event has been used.

Remarks

Requirements

Header:

sliceO_include.hpp

Library:

sliceO_Structures.lib

Example

Sample "Ima_Motion" function from the "Edit mode" module.

...

// ----------------------------------------------------------------------------

// Function: Ima_Motion

// Parameters: up_down (int) state of the mouse buttons

// Returns: (int) 1 if action was used

// This is called each time the cursor is inside an image and the cursor

// has moved.

// ----------------------------------------------------------------------------

extern "C" __declspec(dllexport) int Ima_Motion( HWND wnd, SliceO_Window *window, int up_down, short x, short y )

{

// --- there is no significant diff with the "Click" function ---

return( Ima_Click( wnd, window, up_down, x, y ) ) ;

}

...