multimon.c File Reference

#include "precomp.h"

Go to the source code of this file.

Functions
void	ClipPointToDesktop (LPPOINT lppt)
BOOL	xxxEnumDisplayMonitors (HDC hdcPaint, LPRECT lprcPaint, MONITORENUMPROC lpfnEnum, LPARAM lData, BOOL fInternal)
void	DestroyMonitor (PMONITOR pMonitor)
Variables
PMONITOR	gpMonitorMouse

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Function Documentation

void ClipPointToDesktop (  LPPOINT  lppt  )

Definition at line 33 of file multimon.c. References _MonitorFromPoint(), tagDISPLAYINFO::fDesktopIsRect, gpDispInfo, gpMonitorMouse, NULL, PtInRect(), and tagMONITOR::rcMonitor. Referenced by BoundCursor(). { PMONITOR pMonitor; UserAssert(!gpDispInfo->fDesktopIsRect && "You shouldn't call this function if the desktop is a rectangle.\n" "Just clip to gpsi->rcScreen instead."); /* * Optimization: The cursor is likely to be on the monitor it was last on, * so check for that case. */ if (gpMonitorMouse != NULL && PtInRect(&gpMonitorMouse->rcMonitor, *lppt)) { return; } pMonitor = _MonitorFromPoint(*lppt, MONITOR_DEFAULTTONEAREST); /* * Remember the monitor the cursor is on. */ gpMonitorMouse = pMonitor; if (lppt->x < pMonitor->rcMonitor.left) { lppt->x = pMonitor->rcMonitor.left; } else if (lppt->x >= pMonitor->rcMonitor.right) { lppt->x = pMonitor->rcMonitor.right-1; } if (lppt->y < pMonitor->rcMonitor.top) { lppt->y = pMonitor->rcMonitor.top; } else if (lppt->y >= pMonitor->rcMonitor.bottom) { lppt->y = pMonitor->rcMonitor.bottom-1; } }

void DestroyMonitor (  PMONITOR  pMonitor  )

Definition at line 249 of file multimon.c. References gpDispInfo, gpMonitorMouse, HMFreeObject(), HMMarkObjectDestroy(), tagMONITOR::hrgnMonitor, NULL, tagDISPLAYINFO::pMonitorFirst, tagDISPLAYINFO::pMonitorPrimary, and REMOVE_FROM_LIST. Referenced by CleanupGDI(), and UpdateUserScreen(). { UserAssert(pMonitor); /* * Remove references to this monitor from the global data. */ if (pMonitor == gpMonitorMouse) { gpMonitorMouse = NULL; } /* * Remove from the monitor list. */ REMOVE_FROM_LIST(MONITOR, gpDispInfo->pMonitorFirst, pMonitor, pMonitorNext); /* * Make sure the primary monitor points to a valid monitor. During the * mode changes the primary monitor will be recalculated as appropriate. */ if (pMonitor == gpDispInfo->pMonitorPrimary) { gpDispInfo->pMonitorPrimary = gpDispInfo->pMonitorFirst; } if (HMMarkObjectDestroy(pMonitor)) { if (pMonitor->hrgnMonitor) { GreDeleteObject(pMonitor->hrgnMonitor); } HMFreeObject(pMonitor); } }

BOOL xxxEnumDisplayMonitors (  HDC  hdcPaint, LPRECT  lprcPaint, MONITORENUMPROC  lpfnEnum, LPARAM  lData, BOOL  fInternal )

Definition at line 99 of file multimon.c. References BOOL, CopyRect, FALSE, GetMonitorDC(), gpDispInfo, IntersectRect(), LookupDC(), NULL, OffsetRect(), tagDISPLAYINFO::pMonitorFirst, tagMONITOR::pMonitorNext, PtiCurrent, PtoH, tagDCE::pwndOrg, tagMONITOR::rcMonitor, tagDISPLAYINFO::rcScreen, ReleaseCacheDC(), ThreadLockAlwaysWithPti, ThreadUnlock, TRUE, and xxxClientMonitorEnumProc(). Referenced by NtUserEnumDisplayMonitors(), and xxxInternalPaintDesktop(). { RECT rcPaint; POINT ptOrg; RECT rcMonitorPaint; BOOL fReturn; PMONITOR pMonitor; TL tlpMonitor; PTHREADINFO ptiCurrent = PtiCurrent(); PDCE pdcePaint; HDC hdcMonitor; PWND pwndOrg; /* * Validate the DC passed in. */ if (hdcPaint) { if ((pdcePaint = LookupDC(hdcPaint)) == NULL) { RIPMSG0(RIP_WARNING, "EnumDisplayMonitors: LookupDC failed"); return FALSE; } pwndOrg = pdcePaint->pwndOrg; /* * Intersect the painting area with the clipbox. If there * isn't anything, bail out now. */ if (GreGetClipBox(hdcPaint, &rcPaint, FALSE) == NULLREGION) return TRUE; if (lprcPaint && !IntersectRect(&rcPaint, &rcPaint, lprcPaint)) return TRUE; /* * rcPaint is in dc coordinates. We must convert to screen * coords so we can intersect with monitors. */ GreGetDCOrg(hdcPaint, &ptOrg); OffsetRect(&rcPaint, ptOrg.x, ptOrg.y); } else { CopyRect(&rcPaint, &gpDispInfo->rcScreen); if (lprcPaint && !IntersectRect(&rcPaint, &rcPaint, lprcPaint)) return TRUE; } fReturn = TRUE; for (pMonitor = gpDispInfo->pMonitorFirst; pMonitor != NULL; pMonitor = pMonitor->pMonitorNext) { /* * Note: the check for MONF_VISIBLE was removed to allow mirror drivers * to see monitor specific updates. */ if (!IntersectRect(&rcMonitorPaint, &rcPaint, &pMonitor->rcMonitor)) { continue; } if (hdcPaint) { if ((hdcMonitor = GetMonitorDC(pdcePaint, pMonitor)) == NULL) { RIPMSG0(RIP_WARNING, "EnumDisplayMonitors: GetMonitorDC failed"); return FALSE; } OffsetRect(&rcMonitorPaint, -ptOrg.x, -ptOrg.y); GreIntersectClipRect( hdcMonitor, rcMonitorPaint.left, rcMonitorPaint.top, rcMonitorPaint.right, rcMonitorPaint.bottom); } else { hdcMonitor = NULL; } ThreadLockAlwaysWithPti(ptiCurrent, pMonitor, &tlpMonitor); if (fInternal) { fReturn = (*lpfnEnum) ( (HMONITOR) pMonitor, hdcMonitor, &rcMonitorPaint, lData); } else { fReturn = xxxClientMonitorEnumProc( PtoH(pMonitor), hdcMonitor, &rcMonitorPaint, lData, lpfnEnum); } /* * We just called back and the monitor has been freed if * ThreadUnlock returns NULL. The entire monitor configuration may * have changed, the monitors may have been rearranged, so just stop * enumerating at this point. */ if (ThreadUnlock(&tlpMonitor) == NULL) { fReturn = FALSE; } if (hdcMonitor) ReleaseCacheDC(hdcMonitor, FALSE); if (!fReturn) break; /* * Revalidate hdcPaint, since it could have been messed with * in the callback. */ if (hdcPaint) { if ((pdcePaint = LookupDC(hdcPaint)) == NULL) { RIPMSG0(RIP_WARNING, "EnumDisplayMonitors: LookupDC failed"); return FALSE; } if (pdcePaint->pwndOrg != pwndOrg) { RIPMSG0(RIP_WARNING, "EnumDisplayMonitors: wrong window"); return FALSE; } } } return fReturn; }

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Variable Documentation

PMONITOR gpMonitorMouse

Definition at line 17 of file multimon.c. Referenced by ClipPointToDesktop(), and DestroyMonitor().

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