- 1 year ago
Create wParam for GET_WHEEL_DELTA_WPARAM
To create the wParam
value for the GET_WHEEL_DELTA_WPARAM
message, you can use the GET_WHEEL_DELTA_WPARAM
macro provided by the Windows API. Here's an example:
cpp#include <windows.h>
// Create a wParam value for GET_WHEEL_DELTA_WPARAM
WPARAM CreateGetWheelDeltaWParam(int wheelDelta) {
return GET_WHEEL_DELTA_WPARAM(wheelDelta);
}
int main() {
int wheelDelta = 120; // Example value for wheelDelta
WPARAM wParam = CreateGetWheelDeltaWParam(wheelDelta);
// Use wParam as needed in your code
return 0;
}
In this example, the CreateGetWheelDeltaWParam
function takes an int
value wheelDelta
, which represents the number of wheel units rotated. It uses the GET_WHEEL_DELTA_WPARAM
macro to create the wParam
value for the GET_WHEEL_DELTA_WPARAM
message.
You can then use the resulting wParam
value as needed in your code, such as passing it to a message handler or sending it as a parameter to a function that expects wParam
for processing mouse wheel events.
Make sure to include the necessary headers (windows.h
) to access the Windows API and macros.
Note that the GET_WHEEL_DELTA_WPARAM
macro is typically used when processing mouse wheel messages (WM_MOUSEWHEEL
or WM_MOUSEHWHEEL
). The wParam
value generated by GET_WHEEL_DELTA_WPARAM
contains the wheel delta information, which represents the amount the mouse wheel was rotated.