From a4db7f0005932b0d49ca511a2e06331500be5449 Mon Sep 17 00:00:00 2001
From: crs <cschoeneman@gmail.com>
Date: Sun, 18 Aug 2002 17:35:10 +0000
Subject: [PATCH] fixed PrintScrn handling;  it was being changed to keypad
 multiply.

---
 lib/client/CMSWindowsSecondaryScreen.cpp | 31 +++++++++++++++++++++---
 lib/client/CMSWindowsSecondaryScreen.h   |  4 +--
 lib/server/CMSWindowsPrimaryScreen.cpp   |  9 +++++++
 3 files changed, 39 insertions(+), 5 deletions(-)

diff --git a/lib/client/CMSWindowsSecondaryScreen.cpp b/lib/client/CMSWindowsSecondaryScreen.cpp
index 44267977..a7301199 100644
--- a/lib/client/CMSWindowsSecondaryScreen.cpp
+++ b/lib/client/CMSWindowsSecondaryScreen.cpp
@@ -596,6 +596,31 @@ CMSWindowsSecondaryScreen::mapKey(Keystrokes& keys, UINT& virtualKey,
 		}
 	}
 
+	// special handling of VK_SNAPSHOT
+	if ((virtualKey & 0xff) == VK_SNAPSHOT) {
+		// ignore key repeats on print screen
+		if (action != kRepeat) {
+			// get event flags
+			DWORD flags = 0;
+			if (isExtendedKey(virtualKey)) {
+				flags |= KEYEVENTF_EXTENDEDKEY;
+			}
+			if (action != kPress) {
+				flags |= KEYEVENTF_KEYUP;
+			}
+
+			// active window or fullscreen?
+			BYTE scan = 0;
+			if ((mask & KeyModifierAlt) == 0) {
+				scan = 1;
+			}
+
+			// send event
+			keybd_event(static_cast<BYTE>(virtualKey & 0xff), scan, flags, 0);
+		}
+		return m_mask;
+	}
+
 	// get output mask.  default output mask carries over the current
 	// toggle modifier states and includes desired shift, control, alt,
 	// and meta states.
@@ -992,7 +1017,7 @@ CMSWindowsSecondaryScreen::toggleKey(UINT virtualKey, KeyModifierMask mask)
 }
 
 UINT
-CMSWindowsSecondaryScreen::virtualKeyToScanCode(UINT& virtualKey)
+CMSWindowsSecondaryScreen::virtualKeyToScanCode(UINT& virtualKey) const
 {
 	// try mapping given virtual key
 	UINT code = MapVirtualKey(virtualKey & 0xff, 0);
@@ -1044,7 +1069,7 @@ CMSWindowsSecondaryScreen::virtualKeyToScanCode(UINT& virtualKey)
 }
 
 bool
-CMSWindowsSecondaryScreen::isExtendedKey(UINT virtualKey)
+CMSWindowsSecondaryScreen::isExtendedKey(UINT virtualKey) const
 {
 	// see if we've already encoded the extended flag
 	if ((virtualKey & 0x100) != 0) {
@@ -1079,5 +1104,5 @@ CMSWindowsSecondaryScreen::sendKeyEvent(UINT virtualKey, bool press)
 	const UINT code = virtualKeyToScanCode(virtualKey);
 	keybd_event(static_cast<BYTE>(virtualKey & 0xff),
 								static_cast<BYTE>(code), flags, 0);
-	log((CLOG_DEBUG2 "send key %d, 0x%04x, %s%s", virtualKey & 0xff, code, ((flags & KEYEVENTF_KEYUP) ? "release" : "press"), ((flags & KEYEVENTF_EXTENDEDKEY) ? " extended" : "")));
+	log((CLOG_DEBUG1 "send key %d, 0x%04x, %s%s", virtualKey & 0xff, code, ((flags & KEYEVENTF_KEYUP) ? "release" : "press"), ((flags & KEYEVENTF_EXTENDEDKEY) ? " extended" : "")));
 }
diff --git a/lib/client/CMSWindowsSecondaryScreen.h b/lib/client/CMSWindowsSecondaryScreen.h
index a2b556c2..577413d7 100644
--- a/lib/client/CMSWindowsSecondaryScreen.h
+++ b/lib/client/CMSWindowsSecondaryScreen.h
@@ -97,8 +97,8 @@ private:
 
 	void				releaseKeys();
 	void				toggleKey(UINT virtualKey, KeyModifierMask mask);
-	UINT				virtualKeyToScanCode(UINT& virtualKey);
-	bool				isExtendedKey(UINT virtualKey);
+	UINT				virtualKeyToScanCode(UINT& virtualKey) const;
+	bool				isExtendedKey(UINT virtualKey) const;
 	void				sendKeyEvent(UINT virtualKey, bool press);
 
 private:
diff --git a/lib/server/CMSWindowsPrimaryScreen.cpp b/lib/server/CMSWindowsPrimaryScreen.cpp
index c66162ee..5fe8b1b0 100644
--- a/lib/server/CMSWindowsPrimaryScreen.cpp
+++ b/lib/server/CMSWindowsPrimaryScreen.cpp
@@ -929,6 +929,15 @@ CMSWindowsPrimaryScreen::mapKey(
 		vkCode2 = vkCode;
 	}
 
+	// if the original vkCode is VK_SNAPSHOT then use it.  oddly enough,
+	// some keyboards use the same scan code for keypad multiply and
+	// print screen.  the difference is that the latter has the extended
+	// key flag set.  but MapVirtualKey() doesn't seem capable of using
+	// that flag.
+	else if (vkCode == VK_SNAPSHOT) {
+		vkCode2 = vkCode;
+	}
+
 	// if MapVirtualKey failed then use original virtual key
 	else if (vkCode2 == 0) {
 		vkCode2 = vkCode;