so the mouse pointer will not appear, i dont know how to get it to show up inside the window. the program works just fine, i just want the mouse to appear (if possible could i get a crosshair mouse?) IDE:Code::Blocks Compiler: GNU GPP
| 1 | #include <allegro.h> |
| 2 | using namespace std; |
| 3 | |
| 4 | int x[2] = {-1,-1}; |
| 5 | int y[2] = {-1,-1}; |
| 6 | int count=1; |
| 7 | int blue = makecol(0,0,255); |
| 8 | |
| 9 | void reset(){ |
| 10 | x[0] = -1; |
| 11 | x[1] = -1; |
| 12 | y[0] = -1; |
| 13 | y[1] = -1; |
| 14 | } |
| 15 | |
| 16 | void solidDraw(){ |
| 17 | if(count == 1){ |
| 18 | x[0]=mouse_x; |
| 19 | y[0]=mouse_y; |
| 20 | count++; |
| 21 | //break; |
| 22 | } |
| 23 | else if(count == 2){ |
| 24 | x[1]=mouse_x; |
| 25 | y[1]=mouse_y; |
| 26 | count--; |
| 27 | //break; |
| 28 | } |
| 29 | if(x[0]!=-1 && x[1]!=-1 && y[0]!=-1 && y[1]!=-1){ |
| 30 | line(screen,x[0],y[0],x[1],y[1],blue); |
| 31 | } |
| 32 | } |
| 33 | |
| 34 | void dotDraw(){ |
| 35 | putpixel(screen,mouse_x,mouse_y, blue); |
| 36 | } |
| 37 | |
| 38 | int main(){ |
| 39 | allegro_init(); |
| 40 | install_keyboard(); |
| 41 | install_timer(); |
| 42 | install_mouse(); |
| 43 | show_mouse(screen); |
| 44 | |
| 45 | |
| 46 | |
| 47 | set_color_depth(32); |
| 48 | set_gfx_mode(GFX_AUTODETECT_WINDOWED,800,640,0,0); |
| 49 | clear_to_color(screen,makecol(255,255,255)); |
| 50 | |
| 51 | do{ |
| 52 | if(mouse_b & 1){solidDraw();} |
| 53 | }while(!key[KEY_ESC]); |
| 54 | |
| 55 | allegro_exit(); |
| 56 | } |
| 57 | END_OF_MAIN(); |
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You have to call show_mouse() after you set the video mode, not before. This is because at the moment you currently call show_mouse() the screen pointer is NULL.
--- Kris Asick (Gemini)
--- http://www.pixelships.com
[edit]
What he said.
Besides, you must hide the mouse pointer before doing any drawing. Use scare_mouse and unscare_mouse() to achieve this:
install_mouse(); set_color_depth(32); set_gfx_mode(GFX_AUTODETECT_WINDOWED,800,640,0,0); clear_to_color(screen,makecol(255,255,255)); show_mouse(screen); do{ scare_mouse(); if(mouse_b & 1){solidDraw();} unscare_mouse(); }while(!key[KEY_ESC]); allegro_exit();
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thx guys
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