WIN32 TRANSPARENT RECTANGLE FULL
WIN32 TRANSPARENT RECTANGLE CODE
WIN32 TRANSPARENT RECTANGLE WINDOWS

It also makes sense to use SetWindowRgn to make the mouse able to pass through the window if transparent to select something behind the window. This white border is acceptable if the window is actually a rectangle, but it makes sense to and I was trying to use DwmEnableBlurBehind and make parts of the window transparent.

WIN32 TRANSPARENT RECTANGLE WINDOWS

Without WS_THICKFRAME, borderless windows will not get that white border when in the background, but I cannot do the resizing either. The window style includes WS_THICKFRAME, which is required to make window resizable, and when the window is upfront does not impose any issues. This works now, but whenever I put another window in front, this 'borderless' window gets a thick white border. Then, you can (also, without buttons minimize, maximize, and close) explore between opened applications using Ctrl + Tab or any other way.I was trying to implement a borderless window that can be scaled by handling WM_NCHITTEST message. Take into consideration that the window is still a window (not a background process running over all windows).

WIN32 TRANSPARENT RECTANGLE CODE

It is done! Just see the video where I added the quad in rotation and the code is also available in Github Gist at the end. The latter step is to remove the border of the window and icons for minimizing, maximizing, and closing at the top right: glfwSetWindowAttrib(window, GLFW_DECORATED, GLFW_FALSE) Notice that the framebuffer is already transparent (the code behind). As follows, we should display the following window:

WIN32 TRANSPARENT RECTANGLE FULL

glfwSetWindowPos(window, monitorX + (videoMode->width - windowWidth) / 2, monitorY + (videoMode->height - windowHeight) / 2) ĭo not hesitate, at the end is the full code to consult it. Ok, everything looks good, and we need to place the window in the position where it should appear ( glfwSetWindowPos), remember do not forget the glfwShowWindow. The latter thing to setup is the visibility window hint to false for subsequent window creation 🤓 glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE) Īfter this instruction is mandatory the creation of the window with the glfwCreateWindow command. GlfwGetMonitorPos(monitors, &monitorX, &monitorY) WindowHeight = static_cast(videoMode->height / 16 * 9) WindowWidth = static_cast(videoMode->width / 1.5) GLFWmonitor** monitors = glfwGetMonitors(&count) Ĭonst GLFWvidmode* videoMode = glfwGetVideoMode(monitors) I am assuming that main monitor is in the 0 position These values are practical to set the position of the window: int count, windowWidth, windowHeight, monitorX, monitorY Expressly, we are assuming computation will be over the first monitor (indexing as zero). Great, the further step is to extract the dimension of the output window (e.g. This code should be written after the glfwInit and before the glfwCreateWindow instruction, as follows: glfwWindowHint(GLFW_TRANSPARENT_FRAMEBUFFER, GLFW_TRUE) Lamentably, it does not work at the first shot. The first thing to include will be the transparent framebuffer parameter. The output window of the previous code look like: Let's start adding things

There are 2 variables with the width and height of the window (those should be used later).

However, to set my point is enough instead the boilerplate code using GLSL.

The quad displayed is with Legacy OpenGL (not recommended).

Instead of the classic int main, the WinMain is used.

There are a few things to notice on the previous code: Window = glfwCreateWindow(windowSizeW, windowSizeH, 'Hello World', NULL, NULL) create a windowed mode window and its OpenGL context Int windowSizeW = 640, windowSizeH = 480 Int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, char*, int nShowCmd) change this to int main() to allow the console Then, a single hello world window drawing a quad is shown in the following code: #include The GLFW: Getting started is your starting point on this. A good way to start with GFLW is the great documentation available on the official page. A transparent background means a transparent framebuffer, aka all the untouched fragments 😃įor this purpose, the GLFW library was set using Window (the operating system is relevant to select the window handler library). In that case, the idea is to set the windows without a border with a transparent background.

It means, using a 3D animation in OpenGL floating over the screen in Windows.

A short time ago, I have addressed the problem to render a ghost window 👻.

Win32 transparent rectangle