-
Notifications
You must be signed in to change notification settings - Fork 68
/
Gdip.Tutorial.4-Draw.Circles.ahk
99 lines (74 loc) · 3.04 KB
/
Gdip.Tutorial.4-Draw.Circles.ahk
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
; gdi+ ahk tutorial 4 written by tic (Tariq Porter)
; Requires Gdip.ahk either in your Lib folder as standard library or using #Include
;
; Tutorial to fill the screen with randomly hatched ellipses
#SingleInstance, Force
#NoEnv
SetBatchLines, -1
; Uncomment if Gdip.ahk is not in your standard library
;#Include, Gdip.ahk
; Start gdi+
If !pToken := Gdip_Startup()
{
MsgBox, 48, gdiplus error!, Gdiplus failed to start. Please ensure you have gdiplus on your system
ExitApp
}
OnExit, Exit
; Get the dimensions of the primary monitor
SysGet, MonitorPrimary, MonitorPrimary
SysGet, WA, MonitorWorkArea, %MonitorPrimary%
WAWidth := WARight-WALeft
WAHeight := WABottom-WATop
; Create a layered window (+E0x80000) that is always on top (+AlwaysOnTop), has no taskbar entry or caption
Gui, 1: -Caption +E0x80000 +LastFound +AlwaysOnTop +ToolWindow +OwnDialogs
; Show the window
Gui, 1: Show, NA
; Get a handle to this window we have created in order to update it later
hwnd1 := WinExist()
; Create a gdi bitmap with width and height of the work area
hbm := CreateDIBSection(WAWidth, WAHeight)
; Get a device context compatible with the screen
hdc := CreateCompatibleDC()
; Select the bitmap into the device context
obm := SelectObject(hdc, hbm)
; Get a pointer to the graphics of the bitmap, for use with drawing functions
G := Gdip_GraphicsFromHDC(hdc)
; Set the smoothing mode to antialias = 4 to make shapes appear smother (only used for vector drawing and filling)
Gdip_SetSmoothingMode(G, 4)
; Set a timer to draw a new ellipse every 200ms
SetTimer, DrawCircle, 200
Return
;#######################################################################
DrawCircle:
; Get a random colour for the background and foreground of hatch style used to fill the ellipse,
; as well as random brush style, x and y coordinates and width/height
Random, RandBackColour, 0x00000000, 0xffffffff
Random, RandForeColour, 0x00000000, 0xffffffff
Random, RandBrush, 0, 53
Random, RandElipseWidth, 1, 200
Random, RandElipseHeight, 1, 200
Random, RandElipsexPos, %WALeft%, % WAWidth-RandElipseWidth ;%
Random, RandElipseyPos, %WATop%, % WAHeight-RandElipseHeight ;%
; Create the random brush
pBrush := Gdip_BrushCreateHatch(RandBackColour, RandForeColour, RandBrush)
; Fill the graphics of the bitmap with an ellipse using the brush created
Gdip_FillEllipse(G, pBrush, RandElipsexPos, RandElipseyPos, RandElipseWidth, RandElipseHeight)
; Update the specified window
UpdateLayeredWindow(hwnd1, hdc, WALeft, WATop, WAWidth, WAHeight)
; Delete the brush as it is no longer needed and wastes memory
Gdip_DeleteBrush(pBrush)
Return
;#######################################################################
Exit:
; Select the object back into the hdc
SelectObject(hdc, obm)
; Now the bitmap may be deleted
DeleteObject(hbm)
; Also the device context related to the bitmap may be deleted
DeleteDC(hdc)
; The graphics may now be deleted
Gdip_DeleteGraphics(G)
; ...and gdi+ may now be shutdown
Gdip_Shutdown(pToken)
ExitApp
Return