added arguments so that a user can change rectangle and delay without recompiling

.vs/ProjectSettings.json

@@ -0,0 +1,3 @@
+{
+  "CurrentProjectSetting": "Keine Konfigurationen"
+}

.vs/VSWorkspaceState.json

@@ -0,0 +1,7 @@
+{
+  "ExpandedNodes": [
+    ""
+  ],
+  "SelectedNode": "\\README.md",
+  "PreviewInSolutionExplorer": false
+}

README.md

@@ -20,7 +20,7 @@ This is a **very** minimal hotcorner app, written in C. You can adjust parameter
 
 Zero state is stored anywhere, no registry keys or configuration files.
 
-- If you want to configure something, edit the code and recompile.
+- If you want to configure something, use the arguments or edit the code and recompile. ()
 - If you want to uninstall it, just delete it.
 
 ## Instructions
@@ -55,7 +55,14 @@ Additionally, it is possible to build hotcorner on Linux using MinGW.
 
 ### Configuration
 
-All configuration requires modifying the parameters in `hotcorner.c` and recompiling.
+Use the arguments to define the reactangle position and the delay. 
+Size of the rectangle and delay until its activated can be changed via arguments. The first four arguments define the size and positon of the reactangle, 
+the fifth argument is the delay in milliseconds. 
+The order of the arguments is top, left, right, bottom. E.g. if you want a square at the top left, your arguments are -50 -50 50 50, for the bottom left on a 1080 pixel screen, you could use 
+1070, 20, -20, 1100. To use the arguments make a shortcut to your hotcorner.exe and put the shortcut into "%USERPROFILE%\Start Menu\Programs\Startup\" instead of hotcorner.exe
+In the target of the shortcut add the arguments after hotcorner.exe. E.g. "your/path/to/hotcorner.exe -50 -50 50 50 100"
+If no arguments are provided, the default is used. (-20 -20 20 20 300)
+Further configuration requires modifying the parameters in `hotcorner.c` and recompiling.
 
 * `RECT kHotcorner` - The coordinates of the hot zone.
 * `INPUT kCornerInput[]` - Input sent on activation.
@@ -70,6 +77,7 @@ GPL3
 
 * Tavis Ormandy [@taviso](https://github.com/taviso/) - Original Author
 * Ahmed Samy [@asamy](https://github.com/asamy) - HotKey support
+* Pascal Jaeger [@Schievel1]https://github.com/Schievel1/ - Command line arguments
 
 ## Variations
 

hotcorner.c

@@ -23,10 +23,10 @@
 // If the mouse enters this rectangle, activate the hot corner function.
 // There are some hints about changing corners here
 //      https://github.com/taviso/hotcorner/issues/7#issuecomment-269367351
-static const RECT kHotCorner = {
-    .top    = -20,
-    .left   = -20,
-    .right  = +20,
+static RECT kHotCorner = {
+    .top = -20,
+    .left = -20,
+    .right = +20,
     .bottom = +20,
 };
 
@@ -39,7 +39,7 @@ static const INPUT kCornerInput[] = {
 };
 
 // How long cursor has to linger in the kHotCorner RECT to trigger input.
-static const DWORD kHotDelay = 300;
+static DWORD kHotDelay = 300;
 
 // You can exit the application using the hot key CTRL+ALT+C by default, if it
 // interferes with some application you're using (e.g. a full screen game).
@@ -65,8 +65,8 @@ static DWORD WINAPI CornerHotFunc(LPVOID lpParameter)
     // Check if any modifier keys are pressed.
     if (GetKeyboardState(KeyState)) {
         if (KEYDOWN(KeyState[VK_SHIFT]) || KEYDOWN(KeyState[VK_CONTROL])
-          || KEYDOWN(KeyState[VK_MENU]) || KEYDOWN(KeyState[VK_LWIN])
-          || KEYDOWN(KeyState[VK_RWIN])) {
+            || KEYDOWN(KeyState[VK_MENU]) || KEYDOWN(KeyState[VK_LWIN])
+            || KEYDOWN(KeyState[VK_RWIN])) {
             return 0;
         }
     }
@@ -78,7 +78,7 @@ static DWORD WINAPI CornerHotFunc(LPVOID lpParameter)
 
     // Check co-ordinates.
     if (PtInRect(&kHotCorner, Point)) {
-        #pragma warning(suppress : 4090)
+#pragma warning(suppress : 4090)
         if (SendInput(_countof(kCornerInput), kCornerInput, sizeof(INPUT)) != _countof(kCornerInput)) {
             return 1;
         }
@@ -89,7 +89,7 @@ static DWORD WINAPI CornerHotFunc(LPVOID lpParameter)
 
 static LRESULT CALLBACK MouseHookCallback(int nCode, WPARAM wParam, LPARAM lParam)
 {
-    MSLLHOOKSTRUCT *evt = (MSLLHOOKSTRUCT *) lParam;
+    MSLLHOOKSTRUCT* evt = (MSLLHOOKSTRUCT*)lParam;
 
     // If the mouse hasn't moved, we're done.
     if (wParam != WM_MOUSEMOVE)
@@ -136,6 +136,23 @@ int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLi
     MSG Msg;
     HHOOK MouseHook;
 
+    // get arguments from the command line. First four arguments are the coordinates of the rectangle that activates the hot corner
+    // fifth argument is the delay it takes to activate the hot corner
+    char* ptr;
+    char* arg1 = { strtok_s(lpCmdLine, " ", &ptr) };
+    char* arg2 = { strtok_s(NULL, " ", &ptr) };
+    char* arg3 = { strtok_s(NULL, " ", &ptr) };
+    char* arg4 = { strtok_s(NULL, " ", &ptr) };
+    char* arg5 = { strtok_s(NULL, " ", &ptr) };
+
+    if (arg1 && arg1[0] && arg2 && arg2[0] && arg3 && arg3[0] && arg4 && arg4[0]) {
+        kHotCorner.top = atol(arg1);
+        kHotCorner.left = atol(arg2);
+        kHotCorner.right = atol(arg3);
+        kHotCorner.bottom = atol(arg4);
+        kHotDelay = atol(arg5);
+    }
+
     if (!(MouseHook = SetWindowsHookEx(WH_MOUSE_LL, MouseHookCallback, NULL, 0)))
         return 1;