Fct_Point_2D

This function drag a point (SliceO_Point) to the position under the cursor on the specified frame.

Syntax

int Fct_Point_2D_Drag(

unsigned short flag,

SliceO_Window *window,

SliceO_Frame *frame

) ;

Parameters

This function does not have a parameter.

Return value

This function return "0" if no point is draged.

Remarks

Requirements

Header:

sliceO_include.hpp

Library:

sliceO_Structures.lib

Example

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

// Function: Ima_Click

// Param: wnd (HWND) Window that receive the click

// window (SliceO_Window *) our structure for the window

// up_down (int) state of the mouse buttons

// x, y (short) mouse pos (in "Wnd" coord)

// Return: (int) 1 if this mouse action is used

// 0 if not used

// -1 if error

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

// of the mouse buttons has changed.

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

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

{

static int ID = 1 ;

SliceO_Frame *Frame_Ovr = NULL ;

Drag_Flag = 0 ;

// --- Only valid if the point module is on ---

if ( (! Point_On) && (! Ctrl_Query()) )

return( 0 ) ;

// --- only valid if over a window ---

if ( ! window )

return( 0 ) ;

// --- we react differently according to the Window Mode ---

switch( window->Class_A_Get() ) {

case WINDOW_MODE_ONE :

case WINDOW_MODE_ALL :

// --- only valid if we are over a frame ---

Frame_Ovr = (SliceO_Frame *) Fct_Variable_Value( "$FRAME_OVR" ) ;

if ( ! Frame_Ovr )

return( 0 ) ;

// --- we only want the key press clicks ---

if ( ! (up_down & KEY_PRESS ) )

return( 0 ) ;

// --- Left mouse click: Add or drag a point ---

if ( up_down & MOUSE_KEY_LEFT ) {

// --- did we catch an existing marker? ---

if ( Fct_Point_2D_Capture( CLASS_POINT_NORMAL, window, Frame_Ovr ) ) {

Drag_Flag = 1 ;

Ctrl_Update( UPDATE_USER_1 ) ;

return( 1 ) ;

} else {

// --- place a new marker ---

if ( ! Fct_Point_2D_Insert( CLASS_POINT_NORMAL, window, Frame_Ovr, ID ) )

return( -1 ) ;

ID++ ;

Drag_Flag = 1 ;

return( 1 ) ;

}

// --- Right Mouse click: delete a point ---

if ( up_down & MOUSE_KEY_RIGHT ) {

if ( Fct_Point_2D_Delete( CLASS_POINT_NORMAL, window, Frame_Ovr ) ) {

return( 1 ) ;

}

break ;

...

}

return( 0 ) ;

}

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

// Function: Ima_Motion

// Param: wnd (HWND) Window that receive the click

// window (SliceO_Window *) our structure for the window

// up_down (int) state of the mouse buttons

// x, y (short) mouse pos (in "Wnd" coord)

// Return: (int) 1 if this mouse action is used

// 0 if not used

// -1 if error

// 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 )

{

SliceO_Frame *Frame_Ovr = NULL ;

// --- we are only interested if we are draging a point ---

if ( ! Drag_Flag )

return( 0 ) ;

// --- only valid if over a window ---

if ( ! window ) {

Drag_Flag = 0 ;

return( 0 ) ;

}

// --- we react differently according to the Window Mode ---

switch( window->Class_A_Get() ) {

case WINDOW_MODE_ONE :

case WINDOW_MODE_ALL :

// --- only valid if we are over a frame ---

Frame_Ovr = (SliceO_Frame *) Fct_Variable_Value( "$FRAME_OVR" ) ;

if ( ! Frame_Ovr )

return( 0 ) ;

// --- drag the marker to a new location ---

if( Fct_Point_2D_Drag( CLASS_POINT_NORMAL, window, Frame_Ovr ) ) {

Point_2D_to_3D( Point_Cur ) ;

return( 1 ) ;

}

break ;

...

}

return( 0 ) ;

}