ToolTips -- ajudaa.?
geentee;
sou iniciante em delphii ee preciso de uma ajudiinha .!
tem alguma forma de mostrar um ToolTips sem precisar passar o mouse no componente;!
eah oo seguinte; eu queriia que na tela de login ; ao clicar confirmar, nas edits que estivessem vazias aparecesse um ToolTip avisando o usuario;
unit Ulogin;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, Commctrl; type
Tfmlogin = class(TForm)
lblusuario: TLabel;
lblsenha: TLabel;
lblredsenha: TLabel;
edtusuario: TEdit;
edtsenha: TEdit;
btnconfirmar: TButton;
procedure btnconfirmarClick(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end; const
TTS_BALLOON = $40;
TTM_SETTITLE = (WM_USER + 32);
var
fmlogin: Tfmlogin;
hTooltip: Cardinal;
ti: TToolInfo;
buffer : array[0..255] of char;
implementation {$R *.dfm} procedure CreateToolTips(hWnd: Cardinal);
begin
hToolTip := CreateWindowEx(0, 'Tooltips_Class32', nil, TTS_ALWAYSTIP or TTS_BALLOON,
Integer(CW_USEDEFAULT), Integer(CW_USEDEFAULT),Integer(CW_USEDEFAULT),
Integer(CW_USEDEFAULT), hWnd, 0, hInstance, nil);
if hToolTip <> 0 then
begin
SetWindowPos(hToolTip, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE or
SWP_NOSIZE or SWP_NOACTIVATE);
ti.cbSize := SizeOf(TToolInfo);
ti.uFlags := TTF_SUBCLASS;
ti.hInst := hInstance;
end;
end;
procedure AddToolTip(hwnd: dword; lpti: PToolInfo; IconType: Integer; Text, Title: PChar); var
Item: THandle;
Rect: TRect;
begin
Item := hWnd;
if (Item <> 0) AND (GetClientRect(Item, Rect)) then
begin
lpti.hwnd := Item;
lpti.Rect := Rect;
lpti.lpszText := Text;
SendMessage(hToolTip, TTM_ADDTOOL, 0, Integer(lpti));
FillChar(buffer, sizeof(buffer), #0);
lstrcpy(buffer, Title);
if (IconType > 3) or (IconType < 0) then IconType := 0;
SendMessage(hToolTip, TTM_SETTITLE, IconType, Integer(@buffer));
end;
end;
procedure Tfmlogin.btnconfirmarClick(Sender: TObject);
const
TipoDoIcone = 3;
begin
if edtusuario.Text='' then
begin
CreateToolTips(fmlogin.Handle);
//A linha abaixo usa o hint definido no objeto
AddToolTip(edtusuario.Handle, @ti, TipoDoIcone, PChar(edtusuario.hint), 'Erro!');
end;
end; end. obriigadiinha desde já.! =*
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, Commctrl; type
Tfmlogin = class(TForm)
lblusuario: TLabel;
lblsenha: TLabel;
lblredsenha: TLabel;
edtusuario: TEdit;
edtsenha: TEdit;
btnconfirmar: TButton;
procedure btnconfirmarClick(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end; const
TTS_BALLOON = $40;
TTM_SETTITLE = (WM_USER + 32);
var
fmlogin: Tfmlogin;
hTooltip: Cardinal;
ti: TToolInfo;
buffer : array[0..255] of char;
implementation {$R *.dfm} procedure CreateToolTips(hWnd: Cardinal);
begin
hToolTip := CreateWindowEx(0, 'Tooltips_Class32', nil, TTS_ALWAYSTIP or TTS_BALLOON,
Integer(CW_USEDEFAULT), Integer(CW_USEDEFAULT),Integer(CW_USEDEFAULT),
Integer(CW_USEDEFAULT), hWnd, 0, hInstance, nil);
if hToolTip <> 0 then
begin
SetWindowPos(hToolTip, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE or
SWP_NOSIZE or SWP_NOACTIVATE);
ti.cbSize := SizeOf(TToolInfo);
ti.uFlags := TTF_SUBCLASS;
ti.hInst := hInstance;
end;
end;
procedure AddToolTip(hwnd: dword; lpti: PToolInfo; IconType: Integer; Text, Title: PChar); var
Item: THandle;
Rect: TRect;
begin
Item := hWnd;
if (Item <> 0) AND (GetClientRect(Item, Rect)) then
begin
lpti.hwnd := Item;
lpti.Rect := Rect;
lpti.lpszText := Text;
SendMessage(hToolTip, TTM_ADDTOOL, 0, Integer(lpti));
FillChar(buffer, sizeof(buffer), #0);
lstrcpy(buffer, Title);
if (IconType > 3) or (IconType < 0) then IconType := 0;
SendMessage(hToolTip, TTM_SETTITLE, IconType, Integer(@buffer));
end;
end;
procedure Tfmlogin.btnconfirmarClick(Sender: TObject);
const
TipoDoIcone = 3;
begin
if edtusuario.Text='' then
begin
CreateToolTips(fmlogin.Handle);
//A linha abaixo usa o hint definido no objeto
AddToolTip(edtusuario.Handle, @ti, TipoDoIcone, PChar(edtusuario.hint), 'Erro!');
end;
end; end. obriigadiinha desde já.! =*
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