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#include <windows.h>
#include "ceglue.h"
BOOL FAR (*SHFullScreenPtr)(HWND hwnd, DWORD state) = NULL;
void InitCeGlue (void) {
HINSTANCE ayg = LoadLibraryW (TEXT ("aygshell.dll"));
if (ayg != NULL) {
SHFullScreenPtr = (BOOL (*)(HWND, DWORD))
GetProcAddressW (ayg, TEXT ("SHFullScreen"));
}
}
// code to turn of screen adopted from
// http://msdn.microsoft.com/en-us/library/ms838354.aspx
// GDI Escapes for ExtEscape()
#define QUERYESCSUPPORT 8
// The following are unique to CE
#define GETVFRAMEPHYSICAL 6144
#define GETVFRAMELEN 6145
#define DBGDRIVERSTAT 6146
#define SETPOWERMANAGEMENT 6147
#define GETPOWERMANAGEMENT 6148
typedef enum _VIDEO_POWER_STATE {
VideoPowerOn = 1,
VideoPowerStandBy,
VideoPowerSuspend,
VideoPowerOff
} VIDEO_POWER_STATE, *PVIDEO_POWER_STATE;
typedef struct _VIDEO_POWER_MANAGEMENT {
ULONG Length;
ULONG DPMSVersion;
ULONG PowerState;
} VIDEO_POWER_MANAGEMENT, *PVIDEO_POWER_MANAGEMENT;
int CeEnableBacklight(int enable) {
HDC gdc;
int iESC=SETPOWERMANAGEMENT;
gdc = GetDC(NULL);
if (ExtEscape(gdc, QUERYESCSUPPORT, sizeof(int), (LPCSTR)&iESC,
0, NULL)==0) {
MessageBox(NULL,
L"Sorry, your Pocket PC does not support DisplayOff",
L"Pocket PC Display Off Feature",
MB_OK);
ReleaseDC(NULL, gdc);
return FALSE;
} else {
VIDEO_POWER_MANAGEMENT vpm;
vpm.Length = sizeof(VIDEO_POWER_MANAGEMENT);
vpm.DPMSVersion = 0x0001;
if (enable) {
vpm.PowerState = VideoPowerOn;
} else {
vpm.PowerState = VideoPowerOff;
}
// Power off the display
ExtEscape(gdc, SETPOWERMANAGEMENT, vpm.Length, (LPCSTR) &vpm,
0, NULL);
ReleaseDC(NULL, gdc);
return TRUE;
}
}
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