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fix BitBlt error at same params (on x/y axis) #29

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fix BitBlt error at same params (on x/y axis) #29

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3 changes: 3 additions & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
# IDE tool cache
.idea/*
.vscode/*
3 changes: 3 additions & 0 deletions windows.go
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Expand Up @@ -68,6 +68,9 @@ func Capture(x, y, width, height int) (*image.RGBA, error) {
}
defer win.SelectObject(memory_device, old)

if x == width || y == height {
return nil, errors.New("size failed (width or height are consistent)")
}
if !win.BitBlt(memory_device, 0, 0, int32(width), int32(height), hdc, int32(x), int32(y), win.SRCCOPY) {
return nil, errors.New("BitBlt failed")
}
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