Creates a rectangular region
#include <WinAPIGdi.au3>
_WinAPI_CreateRectRgn ( $iLeftRect, $iTopRect, $iRightRect, $iBottomRect )
| $iLeftRect | X-coordinate of the upper-left corner of the region |
| $iTopRect | Y-coordinate of the upper-left corner of the region |
| $iRightRect | X-coordinate of the lower-right corner of the region |
| $iBottomRect | Y-coordinate of the lower-right corner of the region |
| Success: | the handle to the region. |
| Failure: | 0. |
When you no longer need the HRGN object call the _WinAPI_DeleteObject() function to delete it.
Region coordinates are represented as 27-bit signed integers.
The region will be exclusive of the bottom and right edges.
_WinAPI_CombineRgn, _WinAPI_CreateRoundRectRgn, _WinAPI_DeleteObject, _WinAPI_GetWindowRgn, _WinAPI_SetWindowRgn
Search CreateRectRgn in MSDN Library.
#include <GUIConstantsEx.au3>
#include <WinAPIGdi.au3>
#include <WinAPIHObj.au3>
#include <WinAPISys.au3>
; get height of window title and width of window frame - may be different when XP theme is ON/OFF
Global $g_iHtit = _WinAPI_GetSystemMetrics($SM_CYCAPTION)
Global $g_iFrame = _WinAPI_GetSystemMetrics($SM_CXDLGFRAME)
Global $g_hGui = GUICreate("Test Windows regions", 350, 210)
Local $idBtn_Default = GUICtrlCreateButton("Default region", 100, 30, 150)
Local $idBtn_Round = GUICtrlCreateButton("Round region", 100, 60, 150)
Local $idBtn_Buble = GUICtrlCreateButton("Buble region ", 100, 90, 150)
Local $idBtn_Transparent = GUICtrlCreateButton("Transparent region", 100, 120, 150)
Local $idBtn_Exit = GUICtrlCreateButton("Exit", 100, 150, 150)
GUISetState(@SW_SHOW)
Local $aPos = WinGetPos($g_hGui) ; get whole window size (no client size defined in GUICreate)
Global $g_iWidth = $aPos[2]
Global $g_iHeight = $aPos[3]
Local $iMsg, $hRgn
While 1
$iMsg = GUIGetMsg()
Select
Case $iMsg = $GUI_EVENT_CLOSE Or $iMsg = $idBtn_Exit
ExitLoop
Case $iMsg = $idBtn_Default
$hRgn = _WinAPI_CreateRectRgn(0, 0, $g_iWidth, $g_iHeight)
_WinAPI_SetWindowRgn($g_hGui, $hRgn)
Case $iMsg = $idBtn_Round
$hRgn = _WinAPI_CreateRoundRectRgn(0, 0, $g_iWidth, $g_iHeight, $g_iWidth / 3, $g_iHeight / 3)
_WinAPI_SetWindowRgn($g_hGui, $hRgn)
Case $iMsg = $idBtn_Buble
Local $hRgn1 = _WinAPI_CreateRoundRectRgn(0, 0, $g_iWidth / 2, $g_iHeight / 2, $g_iWidth / 2, $g_iHeight / 2) ; left-top
Local $hRgn2 = _WinAPI_CreateRoundRectRgn($g_iWidth / 2, 0, $g_iWidth, $g_iHeight / 2, $g_iWidth / 2, $g_iHeight / 2) ; right-top
_WinAPI_CombineRgn($hRgn1, $hRgn1, $hRgn2, $RGN_OR)
_WinAPI_DeleteObject($hRgn2)
$hRgn2 = _WinAPI_CreateRoundRectRgn(0, $g_iHeight / 2, $g_iWidth / 2, $g_iHeight, $g_iWidth / 2, $g_iHeight / 2) ; left-bottom
_WinAPI_CombineRgn($hRgn1, $hRgn1, $hRgn2, $RGN_OR)
_WinAPI_DeleteObject($hRgn2)
$hRgn2 = _WinAPI_CreateRoundRectRgn($g_iWidth / 2, $g_iHeight / 2, $g_iWidth, $g_iHeight, $g_iWidth / 2, $g_iHeight / 2) ; right-bottom
_WinAPI_CombineRgn($hRgn1, $hRgn1, $hRgn2, $RGN_OR)
_WinAPI_DeleteObject($hRgn2)
$hRgn2 = _WinAPI_CreateRoundRectRgn(10, 10, $g_iWidth - 10, $g_iHeight - 10, $g_iWidth, $g_iHeight) ; middle
_WinAPI_CombineRgn($hRgn1, $hRgn1, $hRgn2, $RGN_OR)
_WinAPI_DeleteObject($hRgn2)
_WinAPI_SetWindowRgn($g_hGui, $hRgn1)
Case $iMsg = $idBtn_Transparent
_GuiHole($g_hGui, 40, 40, 260, 170)
EndSelect
WEnd
; make inner transparent area but add controls
Func _GuiHole($hWin, $iX, $iY, $iSizeW, $iSizeH)
Local $hOuter_rgn, $hInner_rgn, $hCombined_rgn
$hOuter_rgn = _WinAPI_CreateRectRgn(0, 0, $g_iWidth, $g_iHeight)
$hInner_rgn = _WinAPI_CreateRectRgn($iX, $iY, $iX + $iSizeW, $iY + $iSizeH)
$hCombined_rgn = _WinAPI_CreateRectRgn(0, 0, 0, 0)
_WinAPI_CombineRgn($hCombined_rgn, $hOuter_rgn, $hInner_rgn, $RGN_DIFF)
_WinAPI_DeleteObject($hOuter_rgn)
_WinAPI_DeleteObject($hInner_rgn)
_AddCtrlRegion($hCombined_rgn, $idBtn_Default)
_AddCtrlRegion($hCombined_rgn, $idBtn_Round)
_AddCtrlRegion($hCombined_rgn, $idBtn_Buble)
_AddCtrlRegion($hCombined_rgn, $idBtn_Transparent)
_AddCtrlRegion($hCombined_rgn, $idBtn_Exit)
_WinAPI_SetWindowRgn($hWin, $hCombined_rgn)
EndFunc ;==>_GuiHole
; add control's area to given region
; respecting also window title/frame sizes
Func _AddCtrlRegion($hFull_rgn, $idCtrl)
Local $aCtrl_pos, $hCtrl_rgn
$aCtrl_pos = ControlGetPos($g_hGui, "", $idCtrl)
$hCtrl_rgn = _WinAPI_CreateRectRgn($aCtrl_pos[0] + $g_iFrame, $aCtrl_pos[1] + $g_iHtit + $g_iFrame, _
$aCtrl_pos[0] + $aCtrl_pos[2] + $g_iFrame, $aCtrl_pos[1] + $aCtrl_pos[3] + $g_iHtit + $g_iFrame)
_WinAPI_CombineRgn($hFull_rgn, $hFull_rgn, $hCtrl_rgn, $RGN_OR)
_WinAPI_DeleteObject($hCtrl_rgn)
EndFunc ;==>_AddCtrlRegion