Added global hotkeys

PTZControl/PTZControl.h

@@ -30,6 +30,13 @@
 #define TIMER_FOCUS_CHECK			4711
 #define TIMER_AUTO_REPEAT			4712
 #define TIMER_CLEAR_MEMORY			4713
+#define TIMER_HOTKEY_SWITCH_TO		4714	// Used for Hotkeys sequence
+#define TIMER_HOTKEY_POSITION		4715
+#define TIMER_HOTKEY_SWITCH_BACK	4716
+
+#define TIMER_HOTKEY_DELAY_1		10		// Switch to camera
+#define TIMER_HOTKEY_DELAY_2		10		// Set position
+#define TIMER_HOTKEY_DELAY_3		750		// Switch back
 
 #define FOCUS_CHECK_DELAY			250		// After 250msec we move the focus away from a button.
 #define AUTO_REPEAT_DELAY			50		// Autorepeat is on the fastest possible delay of 50msec

PTZControl/PTZControl.sln

@@ -1,10 +1,15 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 16
-VisualStudioVersion = 16.0.30804.86
+# Visual Studio Version 18
+VisualStudioVersion = 18.1.11312.151 d18.0
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "PTZControl", "PTZControl.vcxproj", "{2E2437DA-35E2-4D0D-B1DF-26E1DFEE1FB9}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{5F57E0AA-D4E2-43EA-8450-C89568C6BEBC}"
+	ProjectSection(SolutionItems) = preProject
+		..\README.md = ..\README.md
+	EndProjectSection
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|x64 = Debug|x64

PTZControl/PTZControl.vcxproj

@@ -29,29 +29,29 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v145</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
     <UseOfMfc>Static</UseOfMfc>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v145</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
     <UseOfMfc>Static</UseOfMfc>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v145</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
     <UseOfMfc>Static</UseOfMfc>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v145</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
     <UseOfMfc>Static</UseOfMfc>

PTZControl/PTZControlDlg.cpp

@@ -236,6 +236,9 @@ CPTZControlDlg::CPTZControlDlg(CWnd* pParent /*=nullptr*/)
 	, m_iNumWebCams(0)
 	, m_evTerminating(FALSE,TRUE)
 	, m_pGuardThread(nullptr)
+	, m_iHotKeyCurrentCam{ 0 }
+	, m_iHotKeyNextCam{ 0 }
+	, m_iHotKeyPosition{ 0 }
 {
 	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
 	m_hAccel = ::LoadAccelerators(AfxFindResourceHandle(IDR_ACCELERATOR, RT_ACCELERATOR), MAKEINTRESOURCE(IDR_ACCELERATOR));
@@ -339,6 +342,7 @@ BEGIN_MESSAGE_MAP(CPTZControlDlg, CDialogEx)
 	ON_BN_UNPUSHED(IDC_BT_LEFT, &CPTZControlDlg::OnBtUnpushed)
 	ON_BN_UNPUSHED(IDC_BT_RIGHT, &CPTZControlDlg::OnBtUnpushed)
 	ON_WM_TIMER()
+	ON_WM_HOTKEY()
 END_MESSAGE_MAP()
 
 
@@ -590,6 +594,26 @@ BOOL CPTZControlDlg::OnInitDialog()
 		AfxMessageBox(IDP_ERR_NO_CAMERA, MB_ICONERROR);
 	}
 
+	//-------------Register hotkeys-----------------------------------------
+
+	for (int iWebCam = 0; iWebCam<(m_iNumWebCams==0 ? 1 : m_iNumWebCams); ++iWebCam)
+	{
+		for (int iPreset = 0; iPreset<CWebcamController::NUM_PRESETS; ++iPreset)
+		{
+			if (::RegisterHotKey(
+					GetSafeHwnd(),
+					10*(iWebCam+1)+iPreset,
+					(iWebCam==0 ? (MOD_WIN) : 			 
+					 iWebCam==1 ? (MOD_WIN|MOD_CONTROL) :
+					 iWebCam==2 ? (MOD_WIN|MOD_ALT) : 0),
+					 VK_NUMPAD0+iPreset)==0)
+			{
+				auto dwError = ::GetLastError();
+				TRACE(_T(__FUNCTION__) _T(" RegisterHotKey failed with %d"),dwError);
+			}
+		}
+	}
+
 	//---------------------------------------------------------------------
 	// ADJUST THE DIALOG
 
@@ -649,7 +673,7 @@ BOOL CPTZControlDlg::OnInitDialog()
 	EnableToolTips(TRUE);
 
 	// Start a guard thread that takes care about a blocking app.
-	if (!theApp.m_bNoGuard)
+	if (!theApp.m_bNoGuard)	
 		m_pGuardThread = AfxBeginThread(&GuardThread,this);
 
 	// Set a time to move the focus to the parent window
@@ -729,6 +753,19 @@ void CPTZControlDlg::OnClose()
 	theApp.WriteProfileInt(REG_WINDOW,REG_WINDOW_POSX,rect.left);
 	theApp.WriteProfileInt(REG_WINDOW,REG_WINDOW_POSY,rect.top);
 
+//-------------Register hotkeys-----------------------------------------
+
+	for (int iWebCam = 0; iWebCam<(m_iNumWebCams==0 ? 1 : m_iNumWebCams); ++iWebCam)
+	{
+		for (int iPreset = 0; iPreset<CWebcamController::NUM_PRESETS; ++iPreset)
+		{
+			::UnregisterHotKey(
+				GetSafeHwnd(),
+				10*(iWebCam+1)+iPreset
+			);
+		}
+	}
+
 	DestroyWindow();
 }
 
@@ -802,6 +839,14 @@ BOOL CPTZControlDlg::OnBtPreset(UINT nId)
 	return TRUE;
 }
 
+void CPTZControlDlg::OnHotKey(UINT nId, UINT nMod, UINT nKey)
+{
+	m_iHotKeyCurrentCam = m_iCurrentWebCam;
+	m_iHotKeyNextCam = nId/10-1; // Base 10 = webcam 1
+	m_iHotKeyPosition = nId%10;  // Position 0 = home, 1=mem pos1, etc.	
+	SetTimer(TIMER_HOTKEY_SWITCH_TO, TIMER_HOTKEY_DELAY_1,nullptr);
+}
+
 BOOL CPTZControlDlg::OnBtWebCam(UINT nId)
 {
 	SetActiveCam(nId==IDC_BT_WEBCAM1 ? 0 :
@@ -880,7 +925,34 @@ void CPTZControlDlg::OnSetFocus(CWnd* pOldWnd)
 
 void CPTZControlDlg::OnTimer(UINT_PTR nIDEvent)
 {
-	if (nIDEvent == TIMER_FOCUS_CHECK)
+	// Timer seuqnce 
+	// - TIMER_HOTKEY_SWITCH_TO
+	// - TIMER_HOTKEY_POSITION
+	// - TIMER_HOTKEY_SWITCH_BACK
+	if (nIDEvent==TIMER_HOTKEY_SWITCH_TO)
+	{
+		KillTimer(TIMER_HOTKEY_SWITCH_TO);
+		SetActiveCam(m_iHotKeyNextCam);
+		SetTimer(TIMER_HOTKEY_POSITION,TIMER_HOTKEY_DELAY_2,nullptr);
+	}
+	else if (nIDEvent==TIMER_HOTKEY_POSITION)
+	{
+		KillTimer(TIMER_HOTKEY_POSITION);
+		if (m_iHotKeyPosition>=0 && m_iHotKeyPosition<CWebcamController::NUM_PRESETS+1)
+		{
+			if (m_iHotKeyPosition==0)
+				CPTZControlDlg::OnBtHome();
+			else
+				CPTZControlDlg::OnBtPreset(m_btPreset[m_iHotKeyPosition-1].GetDlgCtrlID());
+		}
+		SetTimer(TIMER_HOTKEY_SWITCH_BACK,TIMER_HOTKEY_DELAY_3,nullptr);
+	}
+	else if (nIDEvent==TIMER_HOTKEY_SWITCH_BACK)
+	{
+		KillTimer(TIMER_HOTKEY_SWITCH_BACK);
+		SetActiveCam(m_iHotKeyCurrentCam);
+	}
+	else if (nIDEvent == TIMER_FOCUS_CHECK)
 	{
 		CWnd* pWndFocus = GetFocus();
 		if (pWndFocus && 

PTZControl/PTZControlDlg.h

@@ -6,6 +6,14 @@
 #include "resource.h"
 #include "ExtensionUnit.h"
 
+/////////////////////////////////////////////////////////////////////////////
+// Hotkey definitions for 0 (Home), and memory positions 1-8
+//  We use it for 3 WebCams
+//  We use offset 10, for each camera, and modifier positions 0-8
+//  0 = home, 1-8 = memory slots 1-8
+//  23 = Camera 2 memory position 3, 10 = Camera 1, Home position
+
+
 //////////////////////////////////////////////////////////////////////////////////////////
 // CPTZButton
 
@@ -113,6 +121,11 @@ class CPTZControlDlg : public CDialogEx
 	CWinThread* m_pGuardThread;
 	static UINT AFX_CDECL GuardThread(LPVOID hWnd); // AFX_THREADPROC
 
+// Hotkey perset, used by timer to switch to a camera and memory position
+	int m_iHotKeyCurrentCam;
+	int m_iHotKeyNextCam;
+	int m_iHotKeyPosition;
+
 // Implementation
 protected:
 	HICON m_hIcon;
@@ -133,7 +146,7 @@ class CPTZControlDlg : public CDialogEx
 	afx_msg LRESULT OnNcHitTest(CPoint point);
 	afx_msg void OnBtMemory();
 	afx_msg BOOL OnBtPreset(UINT nId);
-
+	afx_msg void OnHotKey(UINT nId, UINT nMod, UINT nKey);
 	void ResetMemButton();
 
 	afx_msg BOOL OnBtWebCam(UINT nId);

README.md

@@ -71,7 +71,7 @@ If you click on a direction button once, the motor is turned on and off again af
 If the direction button remains pressed, the motor remains switched on for the corresponding direction until the button is released again.
 This control seems more effective and accurate to me and is the standard. The disadvantage is that if the timer interval is too small, the camera does not react immediately when a button is clicked. But since precision was more important to me because our camera is installed relatively far away from the podium, I use this setting with a 70msec timer.
 
-## Hotkeys
+## Normal Hotkeys
 The program has serveral hotkeys that allows a control without the mouse when it has the focus.
 - Pan-Tilt control with Left, Right, Up, Down keys.
 - Home position with Num-0, Home keys.
@@ -82,6 +82,19 @@ The program has serveral hotkeys that allows a control without the mouse when it
 - Select Camera 1. Alt+1, Alt+Num-1, Alt+Page-Up
 - Select Camera 2. Alt+2, Alt+Num-2, Alt+Page-Down
 
+## Global Hotkeys
+There are also global hotkeys defined. They work from any active program. Normal hotkeys work only as long as the PTZControl program has the input focus. All global hotkeys use the Windows key in combination with Ctrl+Alt key. The global hotkeys defined are:
+- For camera 1
+	- Home position => Windows-Key + 0 (on the numeric key pad) 
+	- Memory Position 1-8 => Windows-Key + 1-8 (on the numeric key pad)
+- For camera 2
+	- Home position => Windows-Key + Ctrl + 0 (on the numeric key pad) 
+	- Memory Position 1-8 => Windows-Key + Ctrl + 1-8 (on the numeric key pad)
+- For camera 3
+	- Home position => Windows-Key + Alt + 0 (on the numeric key pad) 
+	- Memory Position 1-8 => Windows-Key + Alt + 1-8 (on the numeric key pad)
+If camera 2/3 are not available the hotkeys are ignored and not defined.
+
 
 ## Command Line Options
 A few options can be set from the command line. Command-line switches override the settings in the registry.