|
SetCapture(FForm.Handle);
end;
end;
WM_NCRBUTTONDOWN,WM_NCRBUTTONDBLCLK:
begin
if WParam = 888 then
begin
if Assigned(FPopup) then
begin
p.x := FForm.Left + BoundsRect.Left;
p.y := FForm.Top + BoundsRect.Bottom;
FPopup.Popup(p.x,p.y);
end;
end
else
Result:=CallWindowProc(FOldWndProc,FForm.Handle,Msg,WParam,LParam);
end;
WM_NCLBUTTONUP,WM_LBUTTONUP :
begin
if FButtonDown then
begin
FButtonDown := False;
RePaint;
ReleaseCapture;
if Assigned(FOnClick) then FOnClick(self);
end
else
Result:=CallWindowProc(FOldWndProc,FForm.Handle,Msg,WParam,LParam);
end;
else
Result := CallWindowProc(FOldWndProc,FForm.Handle,Msg,WParam,LParam);
end;
end
else
Result := CallWindowProc(FOldWndProc,FForm.Handle,Msg,WParam,LParam);
end;
end;
procedure TTitleBarButton.SetGlyph(const Value: TBitmap);
begin
FGlyph.Assign(Value);
SendMessage(FForm.Handle,WM_NCACTIVATE,0,0);
end;
procedure TTitleBarButton.SetRightMargin(const Value: Cardinal);
begin
FRightMargin := Value;
SendMessage(FForm.Handle,WM_NCACTIVATE,0,0);
end;
procedure TTitleBarButton.SetVisible(const Value: Boolean);
begin
FVisible := Value;
SendMessage(FForm.Handle,WM_NCACTIVATE,0,0);
end;
procedure TTitleBarButton.Notification(Component: TComponent;
Operation: TOperation);
begin
inherited;
if (Operation = opRemove) and (Component = FPopup) then
FPopup := nil;
end;
function TTitleBarButton.GetBoundsRect: TRect;
var
Rec: TRect;
FrameThick: Integer; //窗体框架厚度
BtnWidth,BtnHeight: Integer; //标题栏按钮的宽度和高度
begin
GetWindowRect(FForm.Handle,Rec); //得到窗体边界矩形，相对于屏幕左上角
with Result do
begin
FrameThick := GetSystemMetrics(SM_CYFRAME);
Left := (Rec.Right - Rec.Left) - RightMargin - FrameThick;
Top := FrameThick;
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