References ▼
This is a user callback interface that should be implemented and registered using SetUserEventsCallbackObject method of the ILMScrCap interface.
| lMsg | Specifies the identifier of the mouse message. This parameter can be one of the following messages: | |
| Value | Meaning | |
| USEREVENT_LBUTTONDOWN | The left mouse button is pressed. | |
| USEREVENT_LBUTTONUP | The left mouse button is released. | |
| USEREVENT_MOUSEMOVE | The mouse moves. | |
| USEREVENT_MOUSEWHEEL | The mouse wheel is rotated. | |
| USEREVENT_RBUTTONDOWN | The right mouse button is pressed. | |
| USEREVENT_RBUTTONUP | The left mouse button is released. | |
| lXPos | The X-coordinate of the mouse. | |
| lYPos | The Y-coordinate of the mouse. | |
| lWheelDelta | Wheel delta where a positive value indicates that the wheel was rotated forward, away from the user; a negative value indicates that the wheel was rotated backward, toward the user. One wheel click is defined as WHEEL_DELTA, which is 120. This is valid only when the message is WM_MOUSEWHEEL. | |
| pUserData | Pointer to the user data. | |
The filter will call this method every time a new mouse input event is posted.
| lMsg | Specifies the identifier of the keyboard message. This parameter can be one of the following messages: | |
| Value | Meaning | |
| USEREVENT_KEYDOWN | The nonsystem key is pressed. | |
| USEREVENT_ KEYUP | The nonsystem key is released. | |
| USEREVENT_SYSKEYDOWN | The system key is pressed. | |
| USEREVENT_SYSKEYUP | The system key is released. | |
| lvKey | Specifies a virtual-key code. | |
| bAltPressed | Indicates if the ALT key is pressed or not. | |
| pUserData | Pointer to the user data. | |
The filter will call this method every time a new keyboard input event is posted.