お勧めはしませんが、以下のような方法もあります。
//- 以下、テストコード -//
#include "DxLib.h"
int WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR, int )
{
ChangeWindowMode( TRUE );
SetWindowText( "DxLib:" DXLIB_VERSION_STR );
if ( DxLib_Init( ) == -1 ) return -1;
SetMouseDispFlag( TRUE );
int white = GetColor( 255, 255, 255 );
LONG old = SetClassLong( GetMainWindowHandle( ), GCL_HCURSOR, (LONG)LoadCursor( NULL, IDC_CROSS ) );
SetDrawScreen( DX_SCREEN_BACK );
while ( ProcessMessage( ) == 0 && CheckHitKey( KEY_INPUT_ESCAPE ) == 0 ) {
ClearDrawScreen( );
DrawFormatString( 0, 0, white, "TEST" );
ScreenFlip( );
}
SetClassLong( GetMainWindowHandle( ), GCL_HCURSOR, old );
DxLib_End( );
return 0;
}