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program Project1;
uses
Windows,
SysUtils;
function GetDesktopHwnd(): HWND;
var
hWin: HWND;
bufClassName: array[0..255] of Char;
begin
//取得窗体的HWND
hWin := FindWindow('Progman', nil);
//取得窗体的下一个HWND
hWin := GetWindow(hWin, GW_CHILD);
GetClassName(hWin, bufClassName, 255);
while Trim(bufClassName) <> 'SHELLDLL_DefView' do
begin
if hWin <> 0 then
begin
hWin := GetNextWindow(hWin, GW_HWNDNEXT);
GetClassName(hWin, bufClassName, 255);
end
else
begin
Result := hWin;
Exit;
end;
end;
hWin := GetWindow(hWin, GW_CHILD);
GetClassName(hWin, bufClassName, 255);
while Trim(bufClassName) <> 'SysListView32' do
begin
if hWin <> 0 then
begin
hWin := GetNextWindow(hWin, GW_HWNDNEXT);
GetClassName(hWin, bufClassName, 255);
end
else
begin
Result := hWin;
Exit;
end;
end;
OutputDebugString(PChar(IntToStr(hWin)));
Result := hWin;
end;
procedure SetDesktopSmallIcon();
var
hWin: HWND;
WinStyle: Integer;
begin
hWin := GetDesktopHwnd;
if hWin <> 0 then
begin
WinStyle := GetWindowLong(hWin, GWL_STYLE);
SetWindowLong(hWin, GWL_STYLE, (WinStyle xor $0002));
end;
end;
begin
SetDesktopSmallIcon();
end
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