Title: The function Keypressed
Question: How to realize the function KeyPressed...
Answer:
This function should work with all Delphi versions:
function KeyPressed(aHandle: THandle): boolean;
var
Msg: TMsg;
begin
if PeekMessage(Msg, aHandle, WM_KEYFIRST,WM_KEYLAST,
PM_REMOVE) then
begin
TranslateMessage(Msg);
DispatchMessage(Msg);
Result := true;
end
else Result := false;
end;
Before useing this function you must empty the keyboard buffer. This works in one line:
while KeyPressed(Handle) do ;
As aHandle you have to use the form-handle. For the actual form it's 0.