Sweden-Number/windows/multimon.c

173 lines
4.7 KiB
C

/*
* Multimonitor APIs
*
* Copyright 1998 Turchanov Sergey
*/
#include "monitor.h"
#include "windef.h"
#include "wingdi.h"
#include "winbase.h"
#include "winuser.h"
/**********************************************************************/
#define xPRIMARY_MONITOR ((HMONITOR)0x12340042)
MONITOR MONITOR_PrimaryMonitor;
/***********************************************************************
* MonitorFromPoint
*/
HMONITOR WINAPI MonitorFromPoint(POINT ptScreenCoords, DWORD dwFlags)
{
if ((dwFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST)) ||
((ptScreenCoords.x >= 0) &&
(ptScreenCoords.x < GetSystemMetrics(SM_CXSCREEN)) &&
(ptScreenCoords.y >= 0) &&
(ptScreenCoords.y < GetSystemMetrics(SM_CYSCREEN))))
{
return xPRIMARY_MONITOR;
}
return NULL;
}
/***********************************************************************
* MonitorFromRect
*/
HMONITOR WINAPI MonitorFromRect(LPRECT lprcScreenCoords, DWORD dwFlags)
{
if ((dwFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST)) ||
((lprcScreenCoords->right > 0) &&
(lprcScreenCoords->bottom > 0) &&
(lprcScreenCoords->left < GetSystemMetrics(SM_CXSCREEN)) &&
(lprcScreenCoords->top < GetSystemMetrics(SM_CYSCREEN))))
{
return xPRIMARY_MONITOR;
}
return NULL;
}
/***********************************************************************
* MonitorFromWindow
*/
HMONITOR WINAPI MonitorFromWindow(HWND hWnd, DWORD dwFlags)
{
WINDOWPLACEMENT wp;
if (dwFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST))
return xPRIMARY_MONITOR;
if (IsIconic(hWnd) ?
GetWindowPlacement(hWnd, &wp) :
GetWindowRect(hWnd, &wp.rcNormalPosition)) {
return MonitorFromRect(&wp.rcNormalPosition, dwFlags);
}
return NULL;
}
/***********************************************************************
* GetMonitorInfoA
*/
BOOL WINAPI GetMonitorInfoA(HMONITOR hMonitor, LPMONITORINFO lpMonitorInfo)
{
RECT rcWork;
if ((hMonitor == xPRIMARY_MONITOR) &&
lpMonitorInfo &&
(lpMonitorInfo->cbSize >= sizeof(MONITORINFO)) &&
SystemParametersInfoA(SPI_GETWORKAREA, 0, &rcWork, 0))
{
lpMonitorInfo->rcMonitor = MONITOR_PrimaryMonitor.rect;
lpMonitorInfo->rcWork = rcWork;
lpMonitorInfo->dwFlags = MONITORINFOF_PRIMARY;
if (lpMonitorInfo->cbSize >= sizeof(MONITORINFOEXA))
lstrcpyA(((MONITORINFOEXA*)lpMonitorInfo)->szDevice, "DISPLAY");
return TRUE;
}
return FALSE;
}
/***********************************************************************
* GetMonitorInfoW
*/
BOOL WINAPI GetMonitorInfoW(HMONITOR hMonitor, LPMONITORINFO lpMonitorInfo)
{
RECT rcWork;
if ((hMonitor == xPRIMARY_MONITOR) &&
lpMonitorInfo &&
(lpMonitorInfo->cbSize >= sizeof(MONITORINFO)) &&
SystemParametersInfoW(SPI_GETWORKAREA, 0, &rcWork, 0))
{
lpMonitorInfo->rcMonitor = MONITOR_PrimaryMonitor.rect;
lpMonitorInfo->rcWork = rcWork;
lpMonitorInfo->dwFlags = MONITORINFOF_PRIMARY;
if (lpMonitorInfo->cbSize >= sizeof(MONITORINFOEXW))
lstrcpyW(((MONITORINFOEXW*)lpMonitorInfo)->szDevice, (LPCWSTR)"D\0I\0S\0P\0L\0A\0Y\0\0");
return TRUE;
}
return FALSE;
}
/***********************************************************************
* EnumDisplayMonitors
*/
BOOL WINAPI EnumDisplayMonitors(
HDC hdcOptionalForPainting,
LPRECT lprcEnumMonitorsThatIntersect,
MONITORENUMPROC lpfnEnumProc,
LPARAM dwData)
{
RECT rcLimit = MONITOR_PrimaryMonitor.rect;
if (!lpfnEnumProc)
return FALSE;
if (hdcOptionalForPainting)
{
RECT rcClip;
POINT ptOrg;
switch (GetClipBox(hdcOptionalForPainting, &rcClip))
{
default:
if (!GetDCOrgEx(hdcOptionalForPainting, &ptOrg))
return FALSE;
OffsetRect(&rcLimit, -ptOrg.x, -ptOrg.y);
if (IntersectRect(&rcLimit, &rcLimit, &rcClip) &&
(!lprcEnumMonitorsThatIntersect ||
IntersectRect(&rcLimit, &rcLimit, lprcEnumMonitorsThatIntersect))) {
break;
}
/*fall thru */
case NULLREGION:
return TRUE;
case ERROR:
return FALSE;
}
} else {
if ( lprcEnumMonitorsThatIntersect &&
!IntersectRect(&rcLimit, &rcLimit, lprcEnumMonitorsThatIntersect)) {
return TRUE;
}
}
return lpfnEnumProc(
xPRIMARY_MONITOR,
hdcOptionalForPainting,
&rcLimit,
dwData);
}