To call a member function by pointer, you need two things: A pointer to the object and a pointer to the function. You need both in MenuButton::SetButton()
template <class object>
void MenuButton::SetButton(int xPos, int yPos, LPCWSTR normalFilePath,
LPCWSTR hoverFilePath, LPCWSTR pressedFilePath,
int Width, int Height, object *ButtonObj, void (object::*ButtonFunc)())
{
BUTTON::SetButton(xPos, yPos, normalFilePath, hoverFilePath, pressedFilePath, Width, Height);
this->ButtonObj = ButtonObj;
this->ButtonFunc = ButtonFunc;
}
Then you can invoke the function using both pointers:
((ButtonObj)->*(ButtonFunc))();
Don’t forget to pass the pointer to your object to MenuButton::SetButton()
:
testMenu::testMenu()
:MenuScreen("testMenu")
{
x.SetButton(100,100,TEXT("buttonNormal.png"), TEXT("buttonHover.png"),
TEXT("buttonPressed.png"), 100, 40, this, test2);
draw = false;
}