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glfw/examples/windows.c
Camilla Löwy 0f9a9578f3 Add window hints for initial position
This adds window hints for the initial position, in screen coordinates,
of a window.  The special value GLFW_ANY_POSITION means the window
manager will be allowed to position the window.

It is not possible to set window positions on Wayland and GLFW will
always behave as if these hints are set to GLFW_ANY_POSITION.

Fixes #1603
Fixes #1747
2022-07-29 11:50:13 +02:00

107 lines
3.1 KiB
C

//========================================================================
// Simple multi-window example
// Copyright (c) Camilla Löwy <elmindreda@glfw.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
#define GLAD_GL_IMPLEMENTATION
#include <glad/gl.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char** argv)
{
int xpos, ypos, height;
const char* description;
GLFWwindow* windows[4];
if (!glfwInit())
{
glfwGetError(&description);
printf("Error: %s\n", description);
exit(EXIT_FAILURE);
}
glfwWindowHint(GLFW_DECORATED, GLFW_FALSE);
glfwGetMonitorWorkarea(glfwGetPrimaryMonitor(), &xpos, &ypos, NULL, &height);
for (int i = 0; i < 4; i++)
{
const int size = height / 5;
const struct
{
float r, g, b;
} colors[] =
{
{ 0.95f, 0.32f, 0.11f },
{ 0.50f, 0.80f, 0.16f },
{ 0.f, 0.68f, 0.94f },
{ 0.98f, 0.74f, 0.04f }
};
if (i > 0)
glfwWindowHint(GLFW_FOCUS_ON_SHOW, GLFW_FALSE);
glfwWindowHint(GLFW_POSITION_X, xpos + size * (1 + (i & 1)));
glfwWindowHint(GLFW_POSITION_Y, ypos + size * (1 + (i >> 1)));
windows[i] = glfwCreateWindow(size, size, "Multi-Window Example", NULL, NULL);
if (!windows[i])
{
glfwGetError(&description);
printf("Error: %s\n", description);
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwSetInputMode(windows[i], GLFW_STICKY_KEYS, GLFW_TRUE);
glfwMakeContextCurrent(windows[i]);
gladLoadGL(glfwGetProcAddress);
glClearColor(colors[i].r, colors[i].g, colors[i].b, 1.f);
}
for (;;)
{
for (int i = 0; i < 4; i++)
{
glfwMakeContextCurrent(windows[i]);
glClear(GL_COLOR_BUFFER_BIT);
glfwSwapBuffers(windows[i]);
if (glfwWindowShouldClose(windows[i]) ||
glfwGetKey(windows[i], GLFW_KEY_ESCAPE))
{
glfwTerminate();
exit(EXIT_SUCCESS);
}
}
glfwWaitEvents();
}
}