Examples of com.sun.jna.platform.win32.User32.ReleaseDC()

com.sun.jna.platform.win32.User32.ReleaseDC()
This function releases a device context (DC), freeing it for use by other applications. The effect of ReleaseDC depends on the type of device context. @param hWnd Handle to the window whose device context is to be released. @param hDC Handle to the device context to be released. @return The return value specifies whether the device context isreleased. 1 indicates that the device context is released. Zero indicates that the device context is not released.

                    blend.AlphaFormat = User32.AC_SRC_ALPHA;
                    user.UpdateLayeredWindow(hWnd, screenDC, loc, size, memDC,
                                             srcLoc, 0, blend, User32.ULW_ALPHA);
                }
                finally {
                    user.ReleaseDC(null, screenDC);
                    if (hBitmap != null) {
                        gdi.SelectObject(memDC, oldBitmap);
                        gdi.DeleteObject(hBitmap);
                    }
                    gdi.DeleteDC(memDC);

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                blend.AlphaFormat = User32.AC_SRC_ALPHA;
                user.UpdateLayeredWindow(hWnd, screenDC, loc, size, memDC, srcLoc, 
                                         0, blend, User32.ULW_ALPHA);
            }
            finally {
                user.ReleaseDC(null, screenDC);
                if (hBitmap != null) {
                    gdi.SelectObject(memDC, oldBitmap);
                    gdi.DeleteObject(hBitmap);
                }
                gdi.DeleteDC(memDC);

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                    blend.AlphaFormat = User32.AC_SRC_ALPHA;
                    user.UpdateLayeredWindow(hWnd, screenDC, winLoc, winSize, memDC,
                                             srcLoc, 0, blend, User32.ULW_ALPHA);
                }
                finally {
                    user.ReleaseDC(null, screenDC);
                    if (memDC != null && oldBitmap != null) {
                        gdi.SelectObject(memDC, oldBitmap);
                    }
                }
            }

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                blend.AlphaFormat = User32.AC_SRC_ALPHA;
                user.UpdateLayeredWindow(hWnd, screenDC, loc, size, memDC, srcLoc, 
                                         0, blend, User32.ULW_ALPHA);
            }
            finally {
                user.ReleaseDC(null, screenDC);
                if (hBitmap != null) {
                    gdi.SelectObject(memDC, oldBitmap);
                    gdi.DeleteObject(hBitmap);
                }
                gdi.DeleteDC(memDC);

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                    blend.AlphaFormat = User32.AC_SRC_ALPHA;
                    user.UpdateLayeredWindow(hWnd, screenDC, winLoc, winSize, memDC,
                                             srcLoc, 0, blend, User32.ULW_ALPHA);
                }
                finally {
                    user.ReleaseDC(null, screenDC);
                    if (memDC != null && oldBitmap != null) {
                        gdi.SelectObject(memDC, oldBitmap);
                    }
                }
            }

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                    blend.SourceConstantAlpha = level;
                    blend.AlphaFormat = WinUser.AC_SRC_ALPHA;
                    user.UpdateLayeredWindow(hWnd, screenDC, winLoc, winSize, memDC,
                                             srcLoc, 0, blend, WinUser.ULW_ALPHA);
                } finally {
                    user.ReleaseDC(null, screenDC);
                    if (memDC != null && oldBitmap != null) {
                        gdi.SelectObject(memDC, oldBitmap);
                    }
                }
            }

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                blend.AlphaFormat = WinUser.AC_SRC_ALPHA;
                user.UpdateLayeredWindow(hWnd, screenDC, loc, size, memDC, srcLoc, 
                                         0, blend, WinUser.ULW_ALPHA);
            }
            finally {
                user.ReleaseDC(null, screenDC);
                if (hBitmap != null) {
                    gdi.SelectObject(memDC, oldBitmap);
                    gdi.DeleteObject(hBitmap);
                }
                gdi.DeleteDC(memDC);

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                    blend.SourceConstantAlpha = level;
                    blend.AlphaFormat = WinUser.AC_SRC_ALPHA;
                    user.UpdateLayeredWindow(hWnd, screenDC, winLoc, winSize, memDC,
                                             srcLoc, 0, blend, WinUser.ULW_ALPHA);
                } finally {
                    user.ReleaseDC(null, screenDC);
                    if (memDC != null && oldBitmap != null) {
                        gdi.SelectObject(memDC, oldBitmap);
                    }
                }
            }

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