70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
#include <X11/Xlib.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdint.h>
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int main() {
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Display *display;
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Window window;
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int screen;
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GC gc;
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XEvent event;
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display = XOpenDisplay(NULL);
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if (display == NULL) {
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fprintf(stderr, "Unable to open X display\n");
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exit(1);
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}
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screen = DefaultScreen(display);
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window = XCreateSimpleWindow(display, RootWindow(display, screen), 10, 10, 800, 600, 1,
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BlackPixel(display, screen), WhitePixel(display, screen));
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XSelectInput(display, window, ExposureMask | KeyPressMask);
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XMapWindow(display, window);
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gc = XCreateGC(display, window, 0, NULL);
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XSetForeground(display, gc, BlackPixel(display, screen));
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XGetWindowAttributes(display, window, &attributes);
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*width = attributes.width;
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*height = attributes.height;
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int width = 800;
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int height = 600;
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int depth = DefaultDepth(display, screen);
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// Create a pixel buffer
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uint32_t* pixel_buffer = (uint32_t*)malloc(width * height * sizeof(uint32_t));
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if (pixel_buffer == NULL) {
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fprintf(stderr, "Unable to allocate pixel buffer\n");
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exit(1);
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}
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// Initialize pixel buffer (example: fill with blue color)
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for (int y = 0; y < height; y++) {
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for (int x = 0; x < width; x++) {
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pixel_buffer[y * width + x] = 0x0000FF; // Blue color
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}
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}
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// Create an XImage
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XImage *image = XCreateImage(display, DefaultVisual(display, screen), depth, ZPixmap, 0,
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(char *)pixel_buffer, width, height, 32, 0);
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while(1) {
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XNextEvent(display, &event);
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if (event.type == Expose) {
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XPutImage(display, window, gc, image, 0, 0, 0, 0, width, height);
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}
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}
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XDestroyImage(image);
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XFreeGC(display, gc);
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XDestroyWindow(display, window);
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XCloseDisplay(display);
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return 0;
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}
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