There is the following code:::
Code: Select all
; Code from http://www.autohotkey.com/board/topic/80924-make-windows-background-transparent-but-not-its-content/?p=514404
#SingleInstance, Force
#NoEnv
detecthiddenwindows on
SetBatchLines, -1
onexit exit_
#include gdip.ahk ;download http://www.autohotkey.com/forum/topic32238.html
If !pToken := Gdip_Startup()
{
MsgBox, 48, gdiplus error!, Gdiplus failed to start. Please ensure you have gdiplus on your system
ExitApp
}
Gui, 1: -Caption +E0x80000 +LastFound +OwnDialogs +Owner +alwaysontop
Gui, 1: Show, NA
gui +lastfound
hwnd := WinExist()
sFile=%a_scriptdir%\BG.bmp
pBitmap:=Gdip_CreateBitmapFromFile(sFile)
Gdip_GetDimensions(pBitmap, w, h)
hbm := CreateDIBSection(w,h)
hdc := CreateCompatibleDC()
obm := SelectObject(hdc, hbm)
pGraphics := Gdip_GraphicsFromHDC(hdc)
Gdip_DrawImage(pGraphics, pBitmap,0,0,w,h)
UpdateLayeredWindow(hwnd, hdc, (A_ScreenWidth-w)//2, (A_ScreenHeight-h)//2, w,h)
OnMessage(0x201, "WM_LBUTTONDOWN")
return
WM_LBUTTONDOWN()
{
PostMessage, 0xA1, 2
}
esc::
exit_:
SelectObject(hdc, obm)
DeleteObject(hbm)
DeleteDC(hdc)
Gdip_DeleteGraphics(pGraphics)
Gdip_DisposeImage(pBitmap)
Gdip_Shutdown(pToken)
ExitApp
How to achieve the same result with Base64 image data?
Base64 image data:
Code: Select all
iVBORw0KGgoAAAANSUhEUgAAAMAAAACwCAYAAABZ/mHGAAAACXBIWXMAAAsTAAALEwEAmpwYAAAPOUlEQVR4nO2de6gcVx3HPzO7
yW2S5tFGqzQSjbEJPrt9sNWAEHCF6B+Clf6hIgWrQonUB4gWBBGEKhQfxdI/NEIRq1BsQf+JONKCUG+X23Tqk1bT2mDSPJo0r5vk
3rs74x9nzt2zk9177+6ceew9vw/Z7Oze3TO/nfl9z++c35wzx2MIjWYrHvY3QZg0wnbgDXr/qjfF8YXVTFoIfS/E+QUXMEWwuCHO
L7iEFoEH4vyCm4TtwPPLNkIQysST2l9wGYkAgtOIAASnEQEI1WbnHvbtzOGzCSIAocJsZ9/ebezYe9fyjr1zD/fu3caOvXvYNcIe
RABChTnCwQPP8gosLYLE+eEofzrwDC+NsAcRgFBxlhFBBucHEYAwEQwRQUbnB7kOIEwU29l3zx3sAN7gPNexiSzODxIBhIniCAcP
PM4rsOj8j2RwfhABCBPH9r5Xo2R8BiECECaI/iYQbOMj94yW9kwjAhAmhJ7zv/L04/zmwB945OmjZBWBCECYAPqd/+Dh5O3Dz2QW
gQhAqDhDnF+TUQSSBhUs0XPUlXGBQ08e5NkzKytzoPObjHlNoL5ScwWheI5w8Om3sY9nlnZ+UJGAPexjtLSoRADBaaQPIDiNCEBw
GhGA4DQiAMFpRACC04gABKcRAQhOIwIQnEYEIDiNCEBwGhGA4DQiAMFpRACC04gABKcRAQhOIwIQnEYEIDiNCEBwGhGA4DQiAMFp
RACC04gABKcRAQhOIwIQnEYEIDiNCEBwGhGA4DQiAMFpRACC04gABKcRAQhOIwIQnEYEIDiNCEBwGhGA4DSySJ7bxKnnquKlnq0x
KQJInyDrB8Ix4uQRJQ+9bf69TMzz6yevfWPb2vmvugDi1AN6B8DqgXAI7exdYMF4dOk/zmWjz28NWGM8avSEkJkqC8A8Ud1kW9cE
+iBYOxAOEaOO5xxwCZhNnueADv2RoEx8lH9OAeuBDcnzFBYrv6oKQDt/B5ind3JA1QJTyXOdyRdBDFxOnteRb2JCH9cFlNOfAV5P
ni+ijrOOBGWia/4p4FrgeuBNyd+sNoWqLIAO6oRcTB5XUD94HeqgbGDymkIXgeeSx4vACx4893w76AA0mi0fuBm4FdgF3AbcDmy2
aIMWwCzK+f8LHANOo0RRhSiga//1wFbgxuT9KXqVX83GjqooAB2iF1AOcwZ1ci6gHH0T6qBATh2jHDgE/Bb4edgOTg77UNgOIuD5
5AFAo9naDHwR+CTwIbL9Tt3GNyPAMeAwcBx1jOfpCWDYvrJGiOXK9YG1wEbgrcl7m4Drkvf071iVEUA3fS4D54ATwFHgLOoHX48S
SJ0cOkWW+Svwk7Ad/GLcAsJ2cA54EHiw0Wx9BrgPuCODTbpfpaPraZTz62NsCqAstAC2JK+30N9Es2Zf1QSg26jz9E7OUVSYPo1y
8vPJ8xRwDepA1ahWFLgE/Aj4TtgOurYKDdvBY8BjjWbrfuCbjN80MpuYl1A1/9nkMUc1BDCVbG+iv5NutX9SNQHo9qlZ+/8PeBXV
XvWTv61F9QOuRYlAd4attAszchj4etgOfpfXDsJ28ECj2ZoGHgLeN0YRZoZNJxpUssFjji5dAN/Hi3wfogjwwY/wI4jU5ljo70Y+
+j/wffwoIooS565RS7a0XR16Nf+qFYAZmi/QH5qPJq99lEDWoWq/zajO8BTVaAodAj4dtoOX8t5R2A6eajRbLeBx4MMjfDVObUfm
w4+JDs0EpV4hvrXZiqKUXVxttxWqMhYonZ47i6r9jwGvASdRAnjdeP9Y8v45+rMXZaXwngc+VoTza8J2cALYB/y5qH2uNqokgA4q
1Xke5ejH6Tn/G8n755Ptk8nfjiefvZB813obcYW8jKr5h2Z48iJsB5eAu4C/ZyimKn2nQeRqWxUEYKY9Z1EOfgLl4CeS1xdRbf/L
KGc/Y3zmJCpiXErKKDoKXAa+EbaDFwvcZx9JJLgPFQ0zEfnlu0SRNpT/a69Oe55COfZrqNr9PHCFmAVi5pf9XPFR4KdhO3iiwP0N
JGwHTwE/yFxQVHYCqFgbyhbAsJy0WbPPAvN4dKnRRWUF0pHiePJ6Nvl7UZfz/wXetwvYz4oI28EDwLPZSinbJaBIG8r8tWbH9zLK
2XWtbrbt54jpEhHTIfa8RcEM6iucS8oq6nL+w2H7j/MF7GcUHiKL+MfNb9qkQBvKFsCgtKfpzCq7UyMKZ4I4nAni2PP1hTIzW6T7
C6fJ6YrhAP4ZtoOHcyx/LJKLZX8Z9/uO+X9pAkinPXVm5xjKkfXoxHmgG04HRo0WxcQDhaPTokV1iJ/MqVwbjGrb4jGKKtACStmQ
a1O2rJ+rO75m2lM3fU6RNGU8jwX8/lo8nA5iYiLivivGZtNJD5zLc2jvPPBoDuXa4meMmRGSCJA/5nifWfpTmrr2nwXm45iov/ZX
hDNBjHdV5zmdOtUd4jyiwN/CdvBvy2VaIxlAN1O2HZNAGQJYLu15AbjiQRd/Ccf1ib3BUWRQWtR2nfKc5fLyYBJsLJ2iBbBc2vMN
kvZ7HKXb/v2E00HsrSyS6NGNNqNAZWt/g8KGZEwyRQpg0Hgfc0hDL4MT0w1nhju/5lA7UMnRwZmkU8k+LmO/Q3zYUjl5cqhsAyaB
IkeDptOeg3L4l4hZoDZCk6VGROQtQGxmk65DTZzZghoyPYX6rbbmDLxsoYy8eQEl+grkdapLUQcn3fE1B7T1pz09f8mmTxr12Xi5
q8m206KvWigjV5LplZfLtqPqFBUBhqU9dVPlPPoKbhSN7qA+EV06eFd1rM0oYE6cyRoFqjDxZiVUeZRnJSgiAujaf45eZ1XX0Isp
Sy+poVfS9k8TTi+mRfVUynSH2PY4oe0Zv587tzRbddTEIWEJ8hbAisf7xDGdJGyPRd0n9ry+KGPupz/KZE+Lvivj93MnVrdUkQiw
DEUIYFj7/ARm+zzO5pQz00Ece8sOrzCjQJb9vTOLrQVxc9kGTAJF3oVMpz2PoUTQdzeycZo+acLpwOxrDMo06bSonjMw7j53ZbW1
AHaXbcAkkGcnWNf+aWfsG++jBjlbvFIbEeHToV90g9Ki+qar4zQTbrNjbK5Mgo2lk1cE0M4/bPKKkfa0U/trkrKGdYhtpUXf22i2
KtvEaDRbNyACWBF5CcAc76M7pLop0j9OZ6nxPmNS94nwBo430h3vrNMn68Bn7VibC19ARbqRqeBw6FzJY1fp2l/XwHq8/uJ4Hxg8
2jMrM9NB7Ht9E+1NG2ylRe9sNFtVvR7wqRE/v9gMrOBw6Im7K4RZ+6fH+5jTHHOp/Q0jzLRoukOs06JZRovuBL5qx1p7NJqtz6Pu
Lj0WEgGyMezubuk5uwt4fpxH7a8Jp4PYi4nA01Fg2OC7LFFgf6PZ2mjJ5MwkEekrmQpxTAE292SO9xk02vMM5kwtf4whDyMS+cQQ
m6NF01FAd4jHjQI7gAfsWGuF7wIfyFZEBdpABdpgWwDa2dJ3bNBpzytJ0yeXtn+acDqIiRanT15KbNCifI3e9MksTaEvNZqtz1ky
eWwazdYngK9lLqgCN8Yq0gZbexqUetQT1c3RnnPUlp7oYpvU9Ml0s0x3iLOkRdcA3280W1nu2Z+JRrO1C/ghakWVTPgVuDFWkTbY
EoB5BXb4Xdu8uJtcrS2WqB57XjxsnJCNtOiNwKONZusmOwavnCTn/2tUp3xcyl4TbClytc3GleB07a/H4Ogrvr3hB7EXNz7Y8ujU
gQ71OnQ6iRn1jnK/ep36iFZ1Osl/qlhVXLJJR5Udd70Yr29YhhbBVtQV4g1kW2xjN/D7RrN1d9gOMt6dbWU0mq3dKOe/pYj9rUZs
CEBnfnS68QzKuU7Tq1nVzCSPGhE1fLXgY2dxvlKnN3ep24k746yp4uMReeDHEPWWlMTv9BZYVf9rW88mNp5CrUC4BdWEMEUwKruB
JxrN1rfCdvDLMb6/YhrN1p2opZN2jPhVL7Xtm4/Iw2/c3oqhvAUyIg+fuN+uAXZbIasA9IAy3fmdpXcbc51dqaEmo9SIVxDOMv20
ZYvXqw/6iW2mvXoC/TqyTZ+8ETiQ9AnuD9vBhTHKGEqj+dG1EH8P+DLjj/c311uuo0S/FpgiBn0vJvWf9vRI/+s9j4NRxmIpUaS2
dIM8XlwiSdtVJ6cFUGxGgAV6S9rEqM6hvhyf1/15RkWfeL3+bJ1e6naO/hXTs7AG2A98vNFsPQz82MZaYY1maz/E+4F3ZyzKo38R
6o30FqSr2iJ5G+ktkK0rJmvYiADms4+q7TcBb0m2y1y4YhD65K+jd4Cn6E8I2LJ1B6qZcm+j2XoC+FXYDl4YpYCkY303apnU91iw
Sdf8uhLYSv9SpFVcJnUr/aN4reVJvUazleXHDMr+mMOdq7LwchofVUuvR4ngBpRg34xyAj1/2PY4lA7wD9RNq15C3V3iP8ARVOR5
O2qyzU7gJtSIzvejnMEG6TWC9Qqck7BQ9juAbahh7esZfyh7H1kjgG5SmDWqj1JuHvfjsYVHbz7AOpS9m8nP8TV11EytModSa/Fv
QHX+QYnevKt22edLnx8dpa5H2boBZbu1CGCjD6AFcA299Xs301vasuyDOQjdwdXOsBZlv25nlr3aZF6Yv1lfNJtCTRjS6/CWXftr
tF/pfsoGejW/tfNjIwJAT636Ob20ZZVEMCwNmFumoWKYtatOCGykV1lV5VzpSkpHav0YN0U9EBsRQDuRfk4fxKoc0DRpIaQfq5X0
+VpDbyCjpuxzZh5/01a9XSkBwGCjyj6IK2U1O/swTKHXqP658lLP1shzUryLjjVp5OZYk0IFxr4KQnmIAASnEQEITiMCEJxGBCA4
jQhAcBoRgOA0IgDBaUQAgtOIAASnEQEITiMCEJxGBCA4jQhAcBoRgOA0IgDBaUQAgtOIAASnEQEITiMCEJxGBCA4jQhAcBoRgOA0
IgDBaUQAgtOIAASnEQEITiMCEJxGBCA4jQhAcBoRgOA0IgDBaUQAgtOIAASnEQEITiMCEJxGBCA4jQhAcBoRgOA0IgDBaUQAgtOI
AASnEQEITiMCEJxGBCA4jQhAcBoRgOA0IgDBaUQAgtOIAASnEQEITiMCEJxGBCA4jQhAcBoRgOA0IgDBaUQAgtOIAASn8QAazVZc
tiGCUDRhO/AkAghO4+kNiQKCS4TtwANDACAiENxAOz+kBAAiAmF1Yzo/DBCARoQgrCbSjq/5PyXFSFQv5ANnAAAAAElFTkSuQmCC
roughly how it works when directly uploading a png file
[Mod edit: Image fixed.]