Reintroduced glfwGetWindowPos, glfwSetWindowPos.

README.md

@@ -232,6 +232,7 @@ GLFW.
    changes in the set of available monitors
  * Added `GLFWwindow` and updated window-related functions and callbacks to take
    a window handle
+ * Added `glfwGetWindowPos` for retrieving the position of a window
  * Added `glfwDefaultWindowHints` for resetting all window hints to their
    default values
  * Added `glfwMakeContextCurrent` for making the context of the specified window
@@ -270,8 +271,6 @@ GLFW.
    `GLES2/gl2.h` instead of `GL/gl.h`
  * Added `GLFW_VISIBLE` window hint and parameter for controlling and polling
    window visibility
- * Added `GLFW_POSITION_X` and `GLFW_POSITION_Y` window hints and parameter for
-   controlling and polling window position
  * Added `windows` simple multi-window test program
  * Added `sharing` simple OpenGL object sharing test program
  * Added `modes` video mode enumeration and setting test program

include/GL/glfw3.h

@@ -487,8 +487,6 @@ extern "C" {
 #define GLFW_SHOULD_CLOSE           0x00020003
 #define GLFW_RESIZABLE              0x00022007
 #define GLFW_VISIBLE                0x00022008
-#define GLFW_POSITION_X             0x00022009
-#define GLFW_POSITION_Y             0x0002200A
 
 #define GLFW_CONTEXT_REVISION       0x00020004
 #define GLFW_RED_BITS               0x00021000
@@ -1038,9 +1036,6 @@ GLFWAPI void glfwDefaultWindowHints(void);
  *  The @ref GLFW_VISIBLE hint specifies whether the window will be initially
  *  visible.  This hint is ignored for fullscreen windows.
  *
- *  The @ref GLFW_POSITION_X and @ref GLFW_POSITION_Y hints specify the initial
- *  position of the window.  These hints are ignored for fullscreen windows.
- *
  *  @note This function may only be called from the main thread.
  *
  *  @sa glfwDefaultWindowHints
@@ -1121,6 +1116,48 @@ GLFWAPI void glfwDestroyWindow(GLFWwindow* window);
  */
 GLFWAPI void glfwSetWindowTitle(GLFWwindow* window, const char* title);
 
+/*! @brief Retrieves the position of the client area of the specified window.
+ *  @param[in] window The window to query.
+ *  @param[out] xpos The x-coordinate of the upper-left corner of the client area.
+ *  @param[out] ypos The y-coordinate of the upper-left corner of the client area.
+ *  @ingroup window
+ *
+ *  @remarks Either or both coordinate parameters may be @c NULL.
+ *
+ *  @sa glfwSetWindowPos
+ */
+GLFWAPI void glfwGetWindowPos(GLFWwindow* window, int* xpos, int* ypos);
+
+/*! @brief Sets the position of the client area of the specified window.
+ *  @param[in] window The window to query.
+ *  @param[in] xpos The x-coordinate of the upper-left corner of the client area.
+ *  @param[in] ypos The y-coordinate of the upper-left corner of the client area.
+ *  @ingroup window
+ *
+ *  @remarks The position is the screen coordinate of the upper-left corner of
+ *  the client area of the window.
+ *
+ *  @remarks  If you wish to set an initial window position you should create
+ *  a hidden window (using @ref glfwWindowHint and @ref GLFW_VISIBLE), set its
+ *  position and then show it.
+ *
+ *  @note It is very rarely a good idea to move an already visible window, as it
+ *  will confuse and annoy the user.
+ *
+ *  @note This function may only be called from the main thread.
+ *
+ *  @note The window manager may put limits on what positions are allowed.
+ *
+ *  @bug <b>X11:</b> Some window managers ignore the set position of hidden
+ *  (i.e. unmapped) windows, instead placing them where it thinks is
+ *  appropriate once they are shown.
+ *
+ *  @bug <b>Mac OS X:</b> The screen coordinate system is inverted.
+ *
+ *  @sa glfwGetWindowPos
+ */
+GLFWAPI void glfwSetWindowPos(GLFWwindow* window, int x, int y);
+
 /*! @brief Retrieves the size of the client area of the specified window.
  *  @param[in] window The window whose size to retrieve.
  *  @param[out] width The width of the client area.
@@ -1226,10 +1263,6 @@ GLFWAPI GLFWmonitor* glfwGetWindowMonitor(GLFWwindow* window);
  *  The @ref GLFW_SHOULD_CLOSE property indicates whether the window has been
  *  requested by the user to close.
  *
- *  The @ref GLFW_POSITION_X and @ref GLFW_POSITION_Y properties indicate the
- *  screen position, in pixels, of the upper-left corner of the window's client
- *  area.
- *
  *  @par Context properties
  *
  *  The @ref GLFW_CLIENT_API property indicates the client API provided by the

src/cocoa_window.m

@@ -67,26 +67,18 @@
 {
     [window->nsgl.context update];
 
-    NSRect contentRect =
+    int width, height;
-        [window->ns.object contentRectForFrameRect:[window->ns.object frame]];
+    _glfwPlatformGetWindowSize(window, &width, &height);
-
+    _glfwInputWindowSize(window, width, height);
-    _glfwInputWindowSize(window, contentRect.size.width, contentRect.size.height);
 }
 
 - (void)windowDidMove:(NSNotification *)notification
 {
     [window->nsgl.context update];
 
-    NSRect contentRect =
+    int x, y;
-        [window->ns.object contentRectForFrameRect:[window->ns.object frame]];
+    _glfwPlatformGetWindowPos(window, &x, &y);
-
+    _glfwInputWindowPos(window, x, y);
-    CGPoint mainScreenOrigin = CGDisplayBounds(CGMainDisplayID()).origin;
-    double mainScreenHeight = CGDisplayBounds(CGMainDisplayID()).size.height;
-    CGPoint flippedPos = CGPointMake(contentRect.origin.x - mainScreenOrigin.x,
-                                      mainScreenHeight - contentRect.origin.y -
-                                          mainScreenOrigin.y - window->height);
-
-    _glfwInputWindowPos(window, flippedPos.x, flippedPos.y);
 }
 
 - (void)windowDidMiniaturize:(NSNotification *)notification
@@ -690,11 +682,8 @@ static GLboolean createWindow(_GLFWwindow* window,
             styleMask |= NSResizableWindowMask;
     }
 
-    NSRect contentRect = NSMakeRect(wndconfig->positionX, wndconfig->positionY,
-                                    wndconfig->width, wndconfig->height);
-
     window->ns.object = [[NSWindow alloc]
-        initWithContentRect:contentRect
+        initWithContentRect:NSMakeRect(0, 0, wndconfig->width, wndconfig->height);
                   styleMask:styleMask
                     backing:NSBackingStoreBuffered
                       defer:NO];
@@ -822,9 +811,27 @@ void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char *title)
     [window->ns.object setTitle:[NSString stringWithUTF8String:title]];
 }
 
+void _glfwPlatformGetWindowPos(_GLFWwindow* window, int* xpos, int* ypos)
+{
+    const NSRect contentRect =
+        [window->ns.object contentRectForFrameRect:[window->ns.object frame]];
+
+    if (xpos)
+        *xpos = contentRect.origin.x;
+    if (ypos)
+        *ypos = contentRect.origin.y;
+}
+
+void _glfwPlatformSetWindowPos(_GLFWwindow* window, int x, int y)
+{
+    const NSRect frameRect =
+        [window->ns.object frameRectForContentRect:NSMakeRect(x, y, 0, 0)];
+    [window->ns.object setFrameOrigin:frameRect.origin];
+}
+
 void _glfwPlatformGetWindowSize(_GLFWwindow* window, int* width, int* height)
 {
-    NSRect contentRect =
+    const NSRect contentRect =
         [window->ns.object contentRectForFrameRect:[window->ns.object frame]];
 
     if (width)

src/internal.h

@@ -144,8 +144,6 @@ struct _GLFWhints
     GLboolean   glDebug;
     int         glProfile;
     int         glRobustness;
-    int         positionX;
-    int         positionY;
 };
 
 
@@ -162,8 +160,6 @@ struct _GLFWwndconfig
     const char*   title;
     GLboolean     resizable;
     GLboolean     visible;
-    int           positionX;
-    int           positionY;
     int           clientAPI;
     int           glMajor;
     int           glMinor;
@@ -207,7 +203,6 @@ struct _GLFWwindow
     struct _GLFWwindow* next;
 
     // Window settings and state
-    int                 positionX, positionY;
     GLboolean           iconified;
     GLboolean           resizable;
     GLboolean           visible;
@@ -459,6 +454,14 @@ void _glfwPlatformDestroyWindow(_GLFWwindow* window);
  */
 void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char* title);
 
+/*! @ingroup platform
+ */
+void _glfwPlatformGetWindowPos(_GLFWwindow* window, int* xpos, int* ypos);
+
+/*! @ingroup platform
+ */
+void _glfwPlatformSetWindowPos(_GLFWwindow* window, int xpos, int ypos);
+
 /*! @ingroup platform
  */
 void _glfwPlatformGetWindowSize(_GLFWwindow* window, int* width, int* height);

src/win32_window.c

@@ -715,16 +715,22 @@ static int createWindow(_GLFWwindow* window,
                         const _GLFWfbconfig* fbconfig)
 {
     int positionX, positionY, fullWidth, fullHeight;
-    POINT pos;
+    POINT cursorPos;
     WCHAR* wideTitle;
 
-    // Set window styles common to all window modes
     window->win32.dwStyle = WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
     window->win32.dwExStyle = WS_EX_APPWINDOW;
 
-    // Add mode-dependent window styles
     if (window->monitor)
+    {
         window->win32.dwStyle |= WS_POPUP;
+
+        positionX = wndconfig->monitor->positionX;
+        positionY = wndconfig->monitor->positionY;
+
+        fullWidth  = wndconfig->width;
+        fullHeight = wndconfig->height;
+    }
     else
     {
         window->win32.dwStyle |= WS_OVERLAPPED | WS_CAPTION |
@@ -735,28 +741,13 @@ static int createWindow(_GLFWwindow* window,
             window->win32.dwStyle |= WS_MAXIMIZEBOX | WS_SIZEBOX;
             window->win32.dwExStyle |= WS_EX_WINDOWEDGE;
         }
-    }
 
-    // Adjust window size for frame and title bar
+        positionX = CW_USEDEFAULT;
-    getFullWindowSize(window,
+        positionY = CW_USEDEFAULT;
-                      wndconfig->width, wndconfig->height,
-                      &fullWidth, &fullHeight);
 
-    if (window->monitor)
+        getFullWindowSize(window,
-    {
+                        wndconfig->width, wndconfig->height,
-        // Fullscreen windows are always opened in the upper left corner
+                        &fullWidth, &fullHeight);
-        // regardless of the desktop working area
-        positionX = wndconfig->monitor->positionX;
-        positionY = wndconfig->monitor->positionY;
-    }
-    else
-    {
-        RECT wa;
-        SystemParametersInfo(SPI_GETWORKAREA, 0, &wa, 0);
-
-        // Adjust window position to working area
-        positionX = wndconfig->positionX + wa.left;
-        positionY = wndconfig->positionY + wa.top;
     }
 
     wideTitle = _glfwCreateWideStringFromUTF8(wndconfig->title);
@@ -772,10 +763,9 @@ static int createWindow(_GLFWwindow* window,
                                           wideTitle,
                                           window->win32.dwStyle,
                                           positionX, positionY,
-                                          fullWidth,             // Decorated window width
+                                          fullWidth, fullHeight,
-                                          fullHeight,            // Decorated window height
+                                          NULL, // No parent window
-                                          NULL,                  // No parent window
+                                          NULL, // No window menu
-                                          NULL,                  // No menu
                                           GetModuleHandle(NULL),
                                           window);  // Pass GLFW window to WM_CREATE
 
@@ -788,10 +778,10 @@ static int createWindow(_GLFWwindow* window,
     }
 
     // Initialize cursor position data
-    GetCursorPos(&pos);
+    GetCursorPos(&cursorPos);
-    ScreenToClient(window->win32.handle, &pos);
+    ScreenToClient(window->win32.handle, &cursorPos);
-    window->win32.oldCursorX = window->cursorPosX = pos.x;
+    window->win32.oldCursorX = window->cursorPosX = cursorPos.x;
-    window->win32.oldCursorY = window->cursorPosY = pos.y;
+    window->win32.oldCursorY = window->cursorPosY = cursorPos.y;
 
     if (!_glfwCreateContext(window, wndconfig, fbconfig))
         return GL_FALSE;
@@ -917,6 +907,26 @@ void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char* title)
     free(wideTitle);
 }
 
+void _glfwPlatformGetWindowPos(_GLFWwindow* window, int* xpos, int* ypos)
+{
+    POINT pos = { 0, 0 };
+    ClientToScreen(window->win32.handle, &pos);
+
+    if (xpos)
+        *xpos = pos.x;
+    if (ypos)
+        *ypos = pos.y;
+}
+
+void _glfwPlatformSetWindowPos(_GLFWwindow* window, int xpos, int ypos)
+{
+    RECT rect = { xpos, ypos, xpos, ypos };
+    AdjustWindowRectEx(&rect, window->win32.dwStyle,
+                       FALSE, window->win32.dwExStyle);
+    SetWindowPos(window->win32.handle, NULL, rect.left, rect.top, 0, 0,
+                 SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOSIZE);
+}
+
 void _glfwPlatformGetWindowSize(_GLFWwindow* window, int* width, int* height)
 {
     RECT area;

src/window.c

@@ -94,12 +94,6 @@ void _glfwInputWindowFocus(_GLFWwindow* window, GLboolean focused)
 
 void _glfwInputWindowPos(_GLFWwindow* window, int x, int y)
 {
-    if (window->positionX == x && window->positionY == y)
-        return;
-
-    window->positionX = x;
-    window->positionY = y;
-
     if (window->callbacks.pos)
         window->callbacks.pos((GLFWwindow*) window, x, y);
 }
@@ -189,8 +183,6 @@ GLFWAPI GLFWwindow* glfwCreateWindow(int width, int height,
     wndconfig.title         = title;
     wndconfig.resizable     = _glfw.hints.resizable ? GL_TRUE : GL_FALSE;
     wndconfig.visible       = _glfw.hints.visible ? GL_TRUE : GL_FALSE;
-    wndconfig.positionX     = _glfw.hints.positionX;
-    wndconfig.positionY     = _glfw.hints.positionY;
     wndconfig.clientAPI     = _glfw.hints.clientAPI;
     wndconfig.glMajor       = _glfw.hints.glMajor;
     wndconfig.glMinor       = _glfw.hints.glMinor;
@@ -298,10 +290,6 @@ void glfwDefaultWindowHints(void)
     _glfw.hints.resizable = GL_TRUE;
     _glfw.hints.visible   = GL_TRUE;
 
-    // The default window position is the upper left corner of the screen
-    _glfw.hints.positionX = 0;
-    _glfw.hints.positionY = 0;
-
     // The default is 24 bits of color, 24 bits of depth and 8 bits of stencil
     _glfw.hints.redBits     = 8;
     _glfw.hints.greenBits   = 8;
@@ -362,12 +350,6 @@ GLFWAPI void glfwWindowHint(int target, int hint)
         case GLFW_VISIBLE:
             _glfw.hints.visible = hint;
             break;
-        case GLFW_POSITION_X:
-            _glfw.hints.positionX = hint;
-            break;
-        case GLFW_POSITION_Y:
-            _glfw.hints.positionY = hint;
-            break;
         case GLFW_SAMPLES:
             _glfw.hints.samples = hint;
             break;
@@ -455,6 +437,39 @@ GLFWAPI void glfwSetWindowTitle(GLFWwindow* handle, const char* title)
     _glfwPlatformSetWindowTitle(window, title);
 }
 
+GLFWAPI void glfwGetWindowPos(GLFWwindow* handle, int* xpos, int* ypos)
+{
+    _GLFWwindow* window = (_GLFWwindow*) handle;
+
+    if (!_glfwInitialized)
+    {
+        _glfwInputError(GLFW_NOT_INITIALIZED, NULL);
+        return;
+    }
+
+    _glfwPlatformGetWindowPos(window, xpos, ypos);
+}
+
+GLFWAPI void glfwSetWindowPos(GLFWwindow* handle, int xpos, int ypos)
+{
+    _GLFWwindow* window = (_GLFWwindow*) handle;
+
+    if (!_glfwInitialized)
+    {
+        _glfwInputError(GLFW_NOT_INITIALIZED, NULL);
+        return;
+    }
+
+    if (window->monitor)
+    {
+        _glfwInputError(GLFW_INVALID_VALUE,
+                        "Fullscreen windows cannot be positioned");
+        return;
+    }
+
+    _glfwPlatformSetWindowPos(window, xpos, ypos);
+}
+
 GLFWAPI void glfwGetWindowSize(GLFWwindow* handle, int* width, int* height)
 {
     _GLFWwindow* window = (_GLFWwindow*) handle;
@@ -579,10 +594,6 @@ GLFWAPI int glfwGetWindowParam(GLFWwindow* handle, int param)
             return window->resizable;
         case GLFW_VISIBLE:
             return window->visible;
-        case GLFW_POSITION_X:
-            return window->positionX;
-        case GLFW_POSITION_Y:
-            return window->positionY;
         case GLFW_CLIENT_API:
             return window->clientAPI;
         case GLFW_CONTEXT_VERSION_MAJOR:

src/x11_platform.h

@@ -96,12 +96,6 @@ typedef struct _GLFWwindowX11
     GLboolean       cursorCentered;   // True if cursor was moved since last poll
     int             cursorPosX, cursorPosY;
 
-    // Window position hint (commited the first time the window is shown)
-    GLboolean       windowPosSet;     // False until the window position has
-                                      // been set
-    int             positionX;        // The window position to be set the
-    int             positionY;        // first time the window is shown
-
 } _GLFWwindowX11;
 
 

src/x11_window.c

@@ -120,7 +120,7 @@ static GLboolean createWindow(_GLFWwindow* window,
 
         window->x11.handle = XCreateWindow(_glfw.x11.display,
                                            _glfw.x11.root,
-                                           wndconfig->positionX, wndconfig->positionY,
+                                           0, 0,
                                            wndconfig->width, wndconfig->height,
                                            0,              // Border width
                                            visual->depth,  // Color depth
@@ -137,12 +137,6 @@ static GLboolean createWindow(_GLFWwindow* window,
             _glfwInputError(GLFW_PLATFORM_ERROR, "X11: Failed to create window");
             return GL_FALSE;
         }
-
-        // Request a window position to be set once the window is shown
-        // (see _glfwPlatformShowWindow)
-        window->x11.windowPosSet = GL_FALSE;
-        window->x11.positionX = wndconfig->positionX;
-        window->x11.positionY = wndconfig->positionY;
     }
 
     if (window->monitor && !_glfw.x11.hasEWMH)
@@ -208,13 +202,6 @@ static GLboolean createWindow(_GLFWwindow* window,
     // Set ICCCM WM_NORMAL_HINTS property (even if no parts are set)
     {
         XSizeHints* hints = XAllocSizeHints();
-        if (!hints)
-        {
-            _glfwInputError(GLFW_OUT_OF_MEMORY,
-                            "X11: Failed to allocate size hints");
-            return GL_FALSE;
-        }
-
         hints->flags = 0;
 
         if (wndconfig->monitor)
@@ -896,6 +883,25 @@ void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char* title)
     }
 }
 
+void _glfwPlatformGetWindowPos(_GLFWwindow* window, int* xpos, int* ypos)
+{
+    Window child;
+    int x, y;
+
+    XTranslateCoordinates(_glfw.x11.display, window->x11.handle, _glfw.x11.root,
+                          0, 0, &x, &y, &child);
+
+    if (xpos)
+        *xpos = x;
+    if (ypos)
+        *ypos = y;
+}
+
+void _glfwPlatformSetWindowPos(_GLFWwindow* window, int xpos, int ypos)
+{
+    XMoveWindow(_glfw.x11.display, window->x11.handle, xpos, ypos);
+}
+
 void _glfwPlatformGetWindowSize(_GLFWwindow* window, int* width, int* height)
 {
     XWindowAttributes attribs;
@@ -967,15 +973,6 @@ void _glfwPlatformShowWindow(_GLFWwindow* window)
 {
     XMapRaised(_glfw.x11.display, window->x11.handle);
     XFlush(_glfw.x11.display);
-
-    // Set the window position the first time the window is shown
-    // Note: XMoveWindow has no effect before the window has been mapped.
-    if (!window->x11.windowPosSet)
-    {
-        XMoveWindow(_glfw.x11.display, window->x11.handle,
-                    window->x11.positionX, window->x11.positionY);
-        window->x11.windowPosSet = GL_TRUE;
-    }
 }
 
 void _glfwPlatformHideWindow(_GLFWwindow* window)

tests/sharing.c

@@ -35,6 +35,7 @@
 
 #define WIDTH  400
 #define HEIGHT 400
+#define OFFSET 50
 
 static GLFWwindow* windows[2];
 static GLboolean closed = GL_FALSE;
@@ -60,14 +61,15 @@ static GLFWwindow* open_window(const char* title, GLFWwindow* share, int posX, i
 {
     GLFWwindow* window;
 
-    glfwWindowHint(GLFW_POSITION_X, posX);
+    glfwWindowHint(GLFW_VISIBLE, GL_FALSE);
-    glfwWindowHint(GLFW_POSITION_Y, posY);
     window = glfwCreateWindow(WIDTH, HEIGHT, title, NULL, share);
     if (!window)
         return NULL;
 
     glfwMakeContextCurrent(window);
     glfwSwapInterval(1);
+    glfwSetWindowPos(window, posX, posY);
+    glfwShowWindow(window);
 
     glfwSetWindowCloseCallback(window, window_close_callback);
     glfwSetKeyCallback(window, key_callback);
@@ -131,6 +133,7 @@ static void draw_quad(GLuint texture)
 
 int main(int argc, char** argv)
 {
+    int x, y, width;
     GLuint texture;
 
     glfwSetErrorCallback(error_callback);
@@ -138,7 +141,7 @@ int main(int argc, char** argv)
     if (!glfwInit())
         exit(EXIT_FAILURE);
 
-    windows[0] = open_window("First", NULL, 0, 0);
+    windows[0] = open_window("First", NULL, OFFSET, OFFSET);
     if (!windows[0])
     {
         glfwTerminate();
@@ -150,8 +153,11 @@ int main(int argc, char** argv)
     // It will then be shared with the second context, created below
     texture = create_texture();
 
+    glfwGetWindowPos(windows[0], &x, &y);
+    glfwGetWindowSize(windows[0], &width, NULL);
+
     // Put the second window to the right of the first one
-    windows[1] = open_window("Second", windows[0], WIDTH + 50, 0);
+    windows[1] = open_window("Second", windows[0], x + width + OFFSET, y);
     if (!windows[1])
     {
         glfwTerminate();

tests/threads.c

@@ -90,10 +90,10 @@ int main(void)
     if (!glfwInit())
         exit(EXIT_FAILURE);
 
+    glfwWindowHint(GLFW_VISIBLE, GL_FALSE);
+
     for (i = 0;  i < count;  i++)
     {
-        glfwWindowHint(GLFW_POSITION_X, 200 + 250 * i);
-        glfwWindowHint(GLFW_POSITION_Y, 200);
         threads[i].window = glfwCreateWindow(200, 200,
                                              threads[i].title,
                                              NULL, NULL);
@@ -103,6 +103,9 @@ int main(void)
             exit(EXIT_FAILURE);
         }
 
+        glfwSetWindowPos(threads[i].window, 200 + 250 * i, 200);
+        glfwShowWindow(threads[i].window);
+
         if (thrd_create(&threads[i].id, thread_main, threads + i) !=
             thrd_success)
         {

tests/windows.c

@@ -56,10 +56,10 @@ int main(void)
     if (!glfwInit())
         exit(EXIT_FAILURE);
 
+    glfwWindowHint(GLFW_VISIBLE, GL_FALSE);
+
     for (i = 0;  i < 4;  i++)
     {
-        glfwWindowHint(GLFW_POSITION_X, 100 + (i & 1) * 300);
-        glfwWindowHint(GLFW_POSITION_Y, 100 + (i >> 1) * 300);
         windows[i] = glfwCreateWindow(200, 200, titles[i], NULL, NULL);
         if (!windows[i])
         {
@@ -72,6 +72,9 @@ int main(void)
                      (GLclampf) (i >> 1),
                      i ? 0.f : 1.f,
                      0.f);
+
+        glfwSetWindowPos(windows[i], 100 + (i & 1) * 300, 100 + (i >> 1) * 300);
+        glfwShowWindow(windows[i]);
     }
 
     while (running)