Description: Electronic piano keyboard controls, ctxPiano.ctl source code, code zero electronic piano dazzling effect. MIDI playback. Achieve any mouse button (left, middle, right) is pressed while dragging, press the piano keys bounce animation. Dependent on the resource files, images piano keyboard, piano keyboard picture size (W* H): 17160* 2655 Twip (1144* 177 pixels) 52 white keys, 36 black keys. White keys: W 23 (including both sides of the two lines), high 177, width counted 22, 1144/52 = 22, the black keys: width 16, height 118, the distance between two adjacent black keys: 5, Byte type does not include the negative ! There is a big problem, when the control is first instantiated, does not automatically invoke Let process, requiring initialization code used during the operation of the control s properties, attributes: piano when a key is pressed, whether to automatically sound?
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ctxPiano.ctl
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