Question

TListView控件的标题栏header高度，该怎么解决

Answer 1

unit Unit1;
 
interface
 
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ExtCtrls, StdCtrls, ComCtrls, CommCtrl;
 
type
  TForm1 = class(TForm)
    ListView1: TListView;
    ListView2: TListView;
    Label1: TLabel;
    Label2: TLabel;
    procedure FormCreate(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
 
var
    Form1: TForm1;
    lvhOldProc, lvhNewProc: TFarProc;
    hHeader: THandle;
 
implementation
 
{$R *.dfm}
 
function LvHeaderNewWndProc(h: THandle; uMsg: UINT; wParam: WPARAM; lParam: LPARAM): LRESULT; stdcall;
var
    phdl: PHDLayout;
    prct: PRect;
    pwp: PWindowPos;
begin
    Result := CallWindowProc(lvhOldProc, h, uMsg, wParam, lParam);
 
    if uMsg = HDM_LAYOUT then
    begin
        phdl := PHDLayout(lParam);
        prct := PRect(phdl.Rect);
        pwp := PWindowPos(phdl.WindowPos);
        pwp.cy := pwp.cy + 10; // Header默认高是17,修改成17 + 10 = 27;
        prct.top := pwp.cy + 2;
    end;
end;
 
procedure TForm1.FormCreate(Sender: TObject);
begin
    hHeader := ListView_GetHeader(ListView1.Handle);
 
    lvhOldProc := FARPROC(GetWindowLong(hHeader, GWL_WNDPROC));
    SetWindowLong(hHeader, GWL_WNDPROC, Longint(@LvHeaderNewWndProc));
end;
 
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
    SetWindowLong(hHeader, GWL_WNDPROC, Longint(lvhOldProc));
end;
 
end.