鼠标 opengl

无法显示鼠标的，你得自己画个。

//GLOBALS

//Z-Depth of the whole scene where the mouse is drawn

#define ZOOM -20.f

float mousePosition[2] = {0.0f,0.0f};

void GetMouseInfo() {

    static POINT lastMouse = {0,0};

    //Get current mouse position

    GetCursorPos(&lastMouse);

    //Set cursor position to some point so that the movement can be calculated later on

    SetCursorPos(320,240);

    //Calculate movement of the mouse with the above coords

    float moveX = float((320 - lastMouse.x))/100.0f;

    float moveY = float((240 - lastMouse.y))/100.0f;

    //Update mouse position

    mousePosition[0] -= moveX;

    mousePosition[1] += moveY;

}

void DrawMouseCursor() {

    //Will be transparent

    glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);

    glEnable(GL_BLEND);

    glDisable(GL_DEPTH_TEST);

    //Draw the cursor at the current mouse pos

    glBegin(GL_TRIANGLES);

    glColor4f(0.75,0.75,0.75,0.75);

    glVertex3f(mousePosition[0],mousePosition[1],ZOOM);

    glVertex3f(mousePosition[0],mousePosition[1]-0.5f,ZOOM);

    glVertex3f(mousePosition[0]+0.5f,mousePosition[1],ZOOM);

    glEnd();

    //Alles wird wie vorher

    glDisable(GL_BLEND);

    glEnable(GL_DEPTH_TEST);

}