Mega Code Archive
How to show a popupmenu in the task notification area
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Title: How to show a popupmenu in the task notification area
unit TNA;
interface
uses
Windows, Messages, SysUtils, Classes, Controls, Forms, ExtCtrls,
ShellApi, Menus;
const
k_WM_TASKMSG = WM_APP + 100; //die "100"
type
TForm1 = class(TForm)
TPopupMenu1: TPopupMenu;
procedure FormCreate(Sender: TObject);
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure FormDblClick(Sender: TObject);
procedure PopupMenuClick(Sender: TObject);
private
{ Private-Deklarationen }
tTNA: TNotifyIconData;
procedure WMTaskMsg(var Msg: TMessage); message k_WM_TASKMSG;
procedure AppActive;
procedure AppDeactivate;
procedure ShowIcon;
procedure ChangeIcon;
public
{ Public-Deklarationen }
end;
var
Form1: TForm1;
implementation
{$R *.DFM}
{$R TNA.RES} //eine Resource mit 2 Icons oder Bitmaps
procedure TForm1.FormCreate(Sender: TObject);
begin
Application.ShowMainForm := False;
{Symbol im TNA anzeigen}
Self.ShowIcon;
end;
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
{Symbol aus dem TNA entfernen}
Shell_NotifyIcon(NIM_DELETE, @tTNA);
end;
procedure TForm1.FormDblClick(Sender: TObject);
begin
Self.AppDeactivate;
Self.ChangeIcon;
end;
procedure TForm1.PopupMenuClick(Sender: TObject);
begin
case TPopupMenu(Sender).Tag of
end;
end;
procedure TForm1.WMTaskMsg(var Msg: TMessage);
var
rCursor: TPoint;
begin
if Msg.wParam = tTNA.uID then
begin
case Msg.lParam of
WM_RBUTTONDOWN:
begin
GetCursorPos(rCursor);
TPopupMenu1.Popup(rCursor.x, rCursor.y);
end;
WM_LBUTTONDBLCLK: Self.AppActive;
end;
end;
end;
procedure TForm1.AppActive;
var
hOwner: THandle;
begin
SendMessage(Self.Handle, WM_SYSCOMMAND, SC_RESTORE, 0);
ShowWindow(Self.Handle, SW_SHOW);
SetForegroundWindow(Self.Handle);
{Symbol in der Taskbar einblenden}
hOwner := GetWindow(Self.Handle, GW_OWNER);
SendMessage(hOwner, WM_SYSCOMMAND, SC_RESTORE, 0);
ShowWindow(hOwner, SW_SHOW);
end;
procedure TForm1.AppDeactivate;
begin
{Form ausblenden}
ShowWindow(Self.Handle, SW_HIDE);
{Symbol in der Taskbar ausblenden}
ShowWindow(GetWindow(Self.Handle, GW_OWNER), SW_HIDE);
end;
procedure TForm1.ShowIcon;
begin
tTNA.cbSize := SizeOf(tTNA);
tTNA.Wnd := Self.Handle;
tTNA.uID := 24112000;
tTNA.uCallbackMessage := k_WM_TASKMSG;
tTNA.hIcon := LoadIcon(hInstance, 'xxx');
StrCopy(tTNA.szTip, 'Hallo'); //Hint
tTNA.uFlags := NIF_MESSAGE or NIF_ICON or NIF_TIP;
{CB Symbol in dem TNA einrichten CE}
Shell_NotifyIcon(NIM_ADD, @tTNA);
end;
procedure TForm1.ChangeIcon;
begin
tTNA.cbSize := SizeOf(tTNA);
tTNA.hIcon := LoadIcon(hInstance, 'yyy');
StrCopy(tTNA.szTip, 'Welt'); //Hint
{CB Symbol im TNA ?ndern CE}
Shell_NotifyIcon(NIM_MODIFY, @tTNA);
end;
end.
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