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V_Sim API - Reference Manual | ![]() |
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#define BUTTON_TYPE_PRESS #define BUTTON_TYPE_RELEASE struct SimplifiedEvents_struct; typedef SimplifiedEvents; gboolean (*ActionFunc) (SimplifiedEvents *event, VisuData *data); struct CallbackFunctions_struct; typedef CallbackFunctions;
These definitions are used to give a library and plateform independent simplified event handlers.
#define BUTTON_TYPE_PRESS 1
Value that can be put into field buttonType of structure SimplifiedEvents_struct.
#define BUTTON_TYPE_RELEASE 2
Value that can be put into field buttonType of structure SimplifiedEvents_struct.
struct SimplifiedEvents_struct { int x, y; unsigned int button; int buttonType; int shiftMod, controlMod; int motion; char letter; };
This structure is a common interface for events (inspired from X). We don't use the one introduced by GDK because we don't want this dependency be a limitation.
int x ; |
the position x (on parent) for the event ; |
int y ; |
the position y (on parent) for the event ; |
unsigned int button ; |
the number of the button, 0 if not a button event ; |
int buttonType ; |
BUTTON_TYPE_PRESS or BUTTON_TYPE_RELEASE ; |
int shiftMod ; |
TRUE if Shift key is pressed during the event ; |
int controlMod ; |
TRUE if Control key is pressed during the event ; |
int motion ; |
TRUE if the event is a motion ; |
char letter ; |
The value of the letter if the event is a key stroke. |
typedef struct SimplifiedEvents_struct SimplifiedEvents;
A short way to address SimplifiedEvents_struct objects.
gboolean (*ActionFunc) (SimplifiedEvents *event, VisuData *data);
An interface to methods that can be called whenever an action occurs.
event : |
the event that triggered the action ; |
data : |
the VisuData object on which the action occured. |
Returns : | TRUE if action should be stopped after this call. |
struct CallbackFunctions_struct { ActionFunc action; GDestroyNotify stop; VisuData *data; };
This structure gather some routines and objects that are relevent when an event occures and some actions need to be launched.
ActionFunc action ; |
the method to be called ; |
GDestroyNotify stop ; |
the method to be called if the action should be stopped ; |
VisuData *data ; |
the VisuData object on which the action occured. |